She bit the tip of her left thumb, not looking at me.

她咬着左手的大拇指头，眼睛也不看我。

I cannot tell you what pain I feel when I see how much my mother is under my father's thumb.

我无法向你形容，当看到母亲完全在父亲的控制之下时我有多么痛苦。

It may interest you to know that a boy answering Rory's description thumbed a ride to San Antonio.

你可能会对这个消息感兴趣，有个和罗里描述相符的男孩请求搭便车到圣安东尼奥。