空城计的英文：
[Literal Meaning]
empty/city/stratagem
an empty-city stratagem

[解释]
指在危急情况下，故意装作镇定掩饰空虚、骗过对方的策略。

[Explanation]
presenting a bold front to conceal a weak defense

[例子]
这里经常有贼，居民们外出的时候都把家里的收音机打开，唱空城计让贼以为家里有人。

[Example]
Here are many thieves. So when the residents are out, they usually turn on their radio and play an empty-city stratagem, which will make the thieves believe that someone is at home.