| 释义 |
un.do obj UNFASTENQn5dU:v [T]undoing, past simple undid Vn9dId, past part undone Vn9dVnto unfasten (something that is fastened or tied)解开，打开，松开，脱去Can someone help me to undo my seat belt?谁能帮我解开安全带吗?I'd eaten so much that I had to undo my belt by a couple of holes.我吃得太多了, 我必须松一下皮带。
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