Five space couplets

1, inside and outside the flame blast furnace; The research of space exploration is of far-reaching significance.

2, hard training 18 years, round aviation dream; If you want to enter the top nine, you must be ambitious to serve the country.

3, experienced 18 years of cloudless days; Because of the dream of round aviation, I am ambitious and arrogant.

Couplets must have the following characteristics:

1, words are equal and sentences are consistent. In addition to deliberately leaving a place for a word to achieve a certain effect, the number of words in the upper and lower couplets must be the same, neither more nor less.

2. Be straightforward and have a harmonious tone. The traditional habit is to "pucker up and fall flat", that is, the end of the last sentence of the first couplet is puckered up and the end of the last sentence of the second couplet is flat.

3. Parts of speech should be relative and in the same position. It is generally called "virtual to virtual, real to real", which means that nouns to nouns, verbs to verbs, adjectives to adjectives, quantifiers to quantifiers, adverbs to adverbs and related words must be in the same position.

4. Be content-related, from top to bottom. The meaning of up and down links must be interrelated, but they cannot be repeated.

In addition, the traditional practice of hanging couplets must be written straight and pasted vertically, from right to left and from top to bottom, and cannot be reversed.