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thumb是什么意思啊?如何背?

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thumb是什么意思啊?如何背?
thumb是什么意思啊?如何背?
名词 n.
1.拇指[C]
The little child took her ear between her thumb and forefinger and tugged it playfully.
小孩用大拇指和食指捏住她的耳朵,拉着玩.
2.一拇指的宽度[C]
3.(动物)第一指
及物动词 vt.
1.用拇指翻动
These books were badly thumbed.
这些书都给翻烂了.
2.笨拙地摆弄
3.【口】(在路边)竖起拇指要求搭车;靠搭便车旅行
He couldn't afford the fare; he thumbed his way all over Europe.
他付不起车费,于是他搭便车走遍欧洲.
不及物动词 vi.
1.用拇指翻书;迅速翻阅
He thumbed through the directory to look for her number.
他翻阅电话号码簿找寻她的号码.
2.【口】竖起拇指要求搭车
I went out onto the road to start thumbing.
我走到公路上,竖起拇指要求搭车.