双语例句
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He started unbuckling me.
他开始解开我的安全带。
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Of the ones that do up the strap, about half have them so loose that they can put-on and remove the helmet without unbuckling.
带子扣上的人又有一半的带子太松，以致于不用动扣子就可以把安全帽戴上或取下。
反义词
buckle