大指的英文:
a thumb
n. 拇指
v. 翻阅;以拇指拨弄;请求搭便车
thumb slide rules
翼形滑尺
There is a hole in the thumb of his mitten.
他的手套的姆指上有个洞。
He caught his thumb in the door.
他的拇指让门夹住了。
The Jones family is under the thumb of the mother.
琼斯一家人都得听从母亲的。
He is a rule-of-thumb photographer.
他是一个靠经验摄影的摄影家。