基本解释v.解开……的钮扣；如解开钮扣似地解开同根派生 英汉例句用作动词 (v.)Step aside here and unbutton your vest please.请您到这边来一下，解开马夹纽扣。Please unbutton your shirt and loosen your belt.请解开上衣的扣子英英字典剑桥英英字典 to unfasten the buttons on something such as a shirt