“钮扣”用英语怎么说

你把大衣的钮扣扣错了.You have buttoned up your coat the wrong way.我的钮扣钩怎么也扣不上.My button hook won't clasp.这件上衣用钮扣, 那件用拉链.This coat buttons, but that one zips....

“钮扣”的拼音为：niǔ kòu...