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 softcontact 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。
2
Would you prefer softcontact lenses or hard ones?
你比较喜欢软式隐形眼镜还是硬式的？
3
Corneal ulcers occur most often in patients who use extended-wear softcontact lenses.