The thumbtack pricked his index finger.

大头针扎了他一下手指。

He pinned up the notice with a thumbtack.

他用图钉将通知挂起来。

I press the thumbtack into the board with thumb.

我用大拇指将图钉按在木板上。

He affixed the picture to the wall with a thumbtack.

他用图钉把图片钉到墙上。

I worry that Microsoft is introducing Thumbtack at a bad time.

我担心，微软推出了图钉在一个坏的时间。

"Ouch!" cried the principal. "There is a thumbtack in this chair!"

“哎呦！”校长叫道，“这把椅子上有个图钉！”

Also there is a more sarcastic way, which is not recommended, that is, put a thumbtack into the tire.

还有一种更损的方式，不值得推荐，那就是在车胎上按上个图钉。

Someone pulls the thumbtack out of the tire, which makes it hard for the owner to find where the hole is.

有人按了图钉再拔下来，这样车主找不到窟窿在哪儿，补胎时更困难。

With New York easing its way into spring, being outdoors under a blue sky is almost as refreshing as the chance to stab a thumbtack into a fat, balding, caricature of a boss.

伴因为纽约逐渐进入春天，在蓝天下的户外活动就和把钉子钉进一个肥胖，秃顶的漫画老板的身上一样让人觉得过瘾。