Either put it to the test yourself, or help out someone who is trying to travel hopefully with his thumb outstretched.

你可以自己试一试，也可以帮助那些请求搭便车、满怀希望地去旅行的人。

youdao

He had his thumb out and held a gas can in his other hand.

他竖起拇指请求搭车，另一只手里握着一个汽油罐。

youdao

There was not a car in sight heading my way, but I started walking and stuck my thumb out.

在我前方的路上看不见有车，但我开始走并且竖起了我的拇指。

youdao

Hoover Shoates got his head out of the way but not his thumb.

胡福-硕茨只来得及把他的头缩回去，却没来得及把拇指抽回。

耶鲁公开课 - 1945年后的美国小说课程节选

They might suck their thumb, seek out a blanket or so on.

吮大拇指，或是去寻找毯子之类的。

耶鲁公开课 - 心理学导论课程节选

So she picked up a bag the size of her thumb, emptied out the beans from within, and began to snap.

NEWYORKER: A Tiny Feast

The traditional technique of taking out contacts involves moving the lens to the outer, lower corner of the eye and then using the thumb and forefinger to pinch it out.

CNN: How can I safely remove a stuck contact lens?

Dale Steyn is still ruled out with a thumb injury so South Africa are expected to name an unchanged side.

BBC: England recall Harmison and Broad