I want a story about survival in the desert, urgent. ..........

Desert survival story-people who don't understand masks and paragraphs come in

The story happened in the spring of last century 1998.

A s, a c and a d, these three people have become excellent friends because they often surf the Internet together. They agreed to explore the desert together. Because they have never been to the desert, but they often see desert travel from books or TV. The most important thing is water, not food. People often kill each other for water. Three people together, all found each other in addition to the necessary hiking supplies, there is an extra pot of water, three people can't help but smile at each other.

When they came to the edge of the desert, they were all stunned. The vast desert is endless, as if a beautiful girl is welcoming three people with open arms. So, the three men began to March happily to the hinterland of the desert. During the day, the scorching sun did not affect their determination to explore. In the evening, three people chatted in their tent. They think such an adventure is too enjoyable. They go further and further. On the fourth day, an accident happened. A sudden storm made their comfort disappear. Fortunately, they saved their lives. It is impossible to go any further because they are short of water. The storm swept away most of their water and food, so they had to return immediately. You can imagine the next scene, they will be short of water soon, but the sun is still very hot, like roasting people. What is more frightening is that they can't find the way back, so they have to keep walking back with a compass. Seeing that they couldn't hold on, suddenly a wooden house appeared in front of them, and they jumped like straws. It seems that someone has lived in the house, and all living facilities are available. If I guess correctly, it should be left by the archaeological team. But they searched every corner and found no drop of water. They were disappointed. Suddenly, s found a small refrigerator in the corner. He ran to open the refrigerator door. Oh, my God! This wooden house is powered by solar energy, but there is ice in the refrigerator. He shouted: We are saved! But A C and A D are indifferent. They said, you're crazy. Ice is not water, so what can it save? A s insisted on resting here for two days, because his physical strength was almost exhausted. But A C and A D insist on going on. They thought that they might encounter water ahead, so they didn't listen to A S's advice and moved on. After walking for two days, a strong wind blew them away again. At night, A C really couldn't find the water source, so he dug a big hole in the ground with what little physical strength he had left, and then covered it with a transparent plastic sheet, surrounded by sand, and put a handful of sand in the middle of the plastic sheet, so that the plastic sheet formed a situation of low middle and high periphery. After all this, he dug a hole from the side of the pit and went in. He took out his lunch box, put it in the center of the plastic sheet, and then lay down. At dawn, the first thing C did when he opened his eyes was to look at the lunch box. Wow, there were several mouthfuls of dew in the lunch box, which saved him. It turns out that A C is imitating the experience of American soldiers, digging holes in the desert to cover plastic sheets, because the sand in the depth is wet, and when the ground temperature drops at night, water droplets will condense on the plastic sheets, which can solve the urgent need. After many hardships, A S and A C finally walked out of the desert, but A D never came back. A month later, the wolf team found D's body less than 500 meters from the edge of the desert. ......

You still don't understand what a mask is and what a channel is? Then let me tell you, if the constituency is water, then the mask and the channel are equivalent to ice and water vapor, and the chemical composition of the three is H2O, but their existing states are different. The selection under the layer is intuitive, but it is relatively low-level. If multiple-choice questions are equivalent to elementary school arithmetic, then masks can be regarded as middle school mathematics, and channels can be regarded as advanced mathematics. On the mask, the white area is the selected part to cover the image below. If the black area is not selected, the following image will pass. In the channel, the white area is also the selected area. If you load the channel selection, it is actually the loaded white area. Of course, there may also be gray areas in masks and channels. The gray area on the mask makes the layer translucent, and the selection loaded in the gray area in the channel is also translucent. The lighter the gray scale, the higher the opacity. Under the layer, the selected and unselected boundaries are clear, only the edge of the feathered selection will be translucent, and the center cannot be selected in half. A quick mask is the same as a mask. After entering the quick mask, the place painted by the black brush turns red. After drawing, the unpainted area becomes the selection area.

If you mask a layer and then enter the channel, you can see a new mask channel. If you store a selection under the layer and enter the channel, you will also see a new channel, which shows that the three are interlinked. Channels are the most difficult to understand, and others' explanations are just explanations. Do more examples of channels, and you will gradually understand and apply them. Don't be a d!

So some people say that masks are constituencies and channels are constituencies! ! !

For friends who still don't know about masks and channels, you can only use this popular metaphor. When you are familiar with it, you will understand it more deeply. You may think my explanation is not appropriate at all, which is normal. As long as these explanations help you understand the concept at first, you can kill the donkey after unloading.