Water surges from the cells on the inside of the leaf to those on the outside, causing the leaf to rapidly flip in shape from convex to concave, like a soft contact lens.

水从叶子内部的细胞涌向外面的细胞，导致叶子迅速地从凸向凹翻转，就像一片柔软的隐形眼镜。

youdao

He sat on a water lily leaf and croaked sadly to himself, "I don't like here."

他坐在睡莲叶子上，嘶哑伤心地对自己说：“我不喜欢这里。”

youdao

Eggs are laid on leaf surfaces and when hatched the larvae are washed off or fall into water below.

它们将卵产在树叶表面，然后孵化的幼蛙被雨水冲刷或直接掉落到叶下面的水中。

youdao

So depending on the relative humidity and temperature, 100 or more water molecules diffuse out of the leaf for every molecule of carbon dioxide that diffuses in.

WSJ: Harrison H. Schmitt and William Happer: In Defense of Carbon Dioxide