unfasten词根词缀

unfasten

[ʌnˈfɑ:sn]

vt.解开（尤指衣服或带子）;松开;

vi.解开，脱开，松开;

过去式： unfastened 过去分词： unfastened 现在分词：unfastening 第三人称单数： unfastens

例句:

1、

Please unfasten your safety belt now.

现在请解开安全带.

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2、

When Ted was six we decided that he needed to know how to fasten and unfasten his seat belt...

特德六岁的时候，我们认为他得知道如何系上和解开安全带了。

《柯林斯高阶英汉双解学习词典》

3、

Now you can unfasten your safe belt.

现在您可以解开安全带了.

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