thumb pin
常见例句
- I ran a pin into my thumb.
我的大拇指进了刺。 - The thumb lug: Is used for opening the knife blade as well as serving as the stop pin .
开刀钮：在被用做开刀钮的同时也是刀子的止刀柱。 - The left hand forefinger is stretched, the thumb is moved upwards, pin the side of the bank note, keep the bank note into the tile shape;
左手食指伸直，拇指向上移动，按住钞票的侧面，将钞票压成瓦形； 返回 thumb pin