leaf

我在沙拉上加了一片新鲜的生菜叶。

I added a fresh lettuce ___leaf to my salad.

我在三明治上加了一片新鲜的生菜叶。

I added a fresh lettuce ___leaf to my sandwich.

她仔细观察着手中的树叶。

She is carefully examining the ___leaf in her hand.