Unfastened
v. 解开（尤指衣服或带子）( unfasten的过去式和过去分词 ); 松开; 解开, 脱开, 松开
✅ 同义词
🔴 反义词
🗣️ 情景例句
No, he never did.
没有， 从来没有。
Would you like me to get you a cab?
要我替你叫出租汽车吗？
It was upon this principle that the first instruments were made,
据这一原理，制造出了最初的地震仪器，