1.Many of the world's plants are in danger of dying out.
in danger of处于…危险之中
He was in danger of making a real cock-up of this.
他很有可能会把这事弄得一团糟 。
die out 绝种;绝灭;淘汰
How did the dinosaurs die out?
恐龙是如何灭绝的?
2.Most of the plants are in danger because of humans cutting down forests for farming and cities, and because of pests and climate change.
cut down把…砍倒
A vandal with a chainsaw cut down a tree.
一个故意破坏公物的人用链锯伐倒了一棵树 。