unfasten
vt. 解开；放松
vi. 解开；放松
第三人称单数 unfastens
现在分词 unfastening
过去式 unfastened
过去分词 unfastened
例句
When Ted was six we decided that he needed to know how to fasten and unfasten his seat belt.
泰德六岁时，我们决定让他知道怎样系和解他的安全带。
《柯林斯英汉双解大词典》
Please unfasten your safety belt now.
现在请解开安全带。
May I unfasten my seatbelt, now?
我现在可以解开安全带吗？
