Imitate the examples and appreciate the following couplets from a rhetorical point of view.

1, black hair doesn't know how to study early, and white hair regrets studying late.

Appreciation: Using metonymic rhetoric, the contrast between "black-haired" teenagers and "white-haired" old people, one disdains learning, the other regrets, strongly expresses the author's warning: study hard while it is early.

2. Learn from the abyss, explore diligently, and climb mountains boldly and bravely.

Appreciation: Using metaphor, the process of learning and reading is compared to "exploring the abyss" and "climbing the dangerous peak", which vividly writes out the arduousness of the road of knowledge, which requires us to explore bravely and persevere.

3, slowly enjoy the good wind, such as wine tasting, chewing a good sentence is not as good as watching flowers.

Appreciation: In a metaphorical way, it is explained that if we really want to appreciate such wonderful things as "good wind" and "beautiful sentences", we must savor and chew them carefully. It also shows that the enjoyment process of "wine tasting" and "flower viewing" is fascinating.