Definition: a thin piece of metal with a sharp end, used to join pieces of wood together Level: B2
我踩到了一块板子上突出的钉子。
I stepped on a ___nail sticking out of a board.
在墙上钉一个钉子，我们好挂镜子。
Hammer a ___nail into the wall and we'll hang the mirror on it.
有时在游客给动物的食物中，你会发现玻璃片、钉子甚至毒药。
Sometimes in food given to animals by visitors you can find pieces of glass, ___nails or even poison.
