thumb

/θʌm/📚 12899 44 2四级六级考研托福雅思
Your hand has four fingers and one thumb. 大拇指

noun [专属名词]拇指;(手套的)拇指部分;(灵长目动物或其他哺乳动物的)第一指;竖起大拇指,翘起大拇指(以表示赞成或说明没问题);将拇指指向(所谈论的对象)

She bit the tip of her left thumb, not looking at me.
她咬着左手的大拇指头,也不看我。

verb [vt. 及物动词]竖起大拇指请求搭便车;用拇指摸,用拇指捋;用拇指示意;用拇指翻动,翻阅

It may interest you to know that a boy answering Rory's description thumbed a ride to San Antonio.
可能让你感兴趣的是,有个和罗里描述相符的男孩竖起大拇指请求搭便车到圣安东尼奥。

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