a clip (= an object for fastening things together or holding them in position) for hair, usually made of plastic, that has two curved parts, sometimes shaped like a butterfly's wings, that are held together in the middle by a hinge and can be pressed together to open the clip

Butterfly clips held her blonde hair away from her face. 蝴蝶发夹让她的金发不会拂到脸上。

a metal clip, usually black, with two usually silver handles that can be pressed together to open it, used for holding pieces of paper together

A stack of papers bound with a black butterfly clip was on my desk. 我的办公桌上放着一叠用一只黑色蝴蝶夹夹住的文件。

a metal clip for holding pieces of paper together that consists of a long thin piece of metal bent and folded into a shape similar to that of a butterfly

These handy butterfly clips come in an economy box of 50, indispensable for every office. 这些方便的蝴蝶回形针采用经济型盒装，每盒 50 个，是每个办公室不可或缺的。