英语翻译：
【医】 allus pollex; first finger; pollex; thumb
例句：
- 踢进了那个球着实让他高兴，你看他的教练伸头大拇指在鼓励他呢！
He's absolutely delighted to have scored that goal! See his coach give him the thumbs up!
- 经常吮吸拇指能使牙齿向外突出。
Thumb-sucking can cause protrusion of the teeth.
- 我坐著无聊地旋弄拇指，等候他用完电话。
I sat twiddling my thumbs waiting for him to finish using the phone.
- 他的拇指让门夹了。
He caught his thumb in the door.