“钻空子”，本意指“利用空隙或漏洞进行活动”，现在比喻“乘隙钻营投机，利用漏洞进行对自己有利的活动”。

“空子”表示“loophole”，“钻空子”英文可以翻译为“avail oneself of the loopholes（in a law, contract, etc）”或“take undue advantage of the loophole”。常见说法如“钻制度的空子（take undue advantage of the loopholes in the rules and regulations）”。

例句：

严防坏人钻空子

Take strict precautions against giving bad people an opening.