航空公司在决定执行这些规定时没有事先通知任何人，这给旅客带来了很多麻烦。

When the airlines decided to enforce these rules without giving anyone a heads-up, it created a lot of problems for travellers.

《柯林斯英汉双解大词典》

如果没有，则在映射阶段必须执行转换。

If not, then transformations have to be performed in the mapping phase.

youdao

如果没有，则执行错误退出。

If not, do an error exit.

youdao

Nowhere in the Old or New Testament do we find the institution condemned, but frequently recognized and enforced."

我们在旧约和新约中都没有发现,奴隶制被谴责,相反的,它频繁地得到认可并强制执行"

耶鲁公开课 - 美国内战与重建课程节选

Suppose the Milgram experiment had never been done and it was being done for the first time here.

假设米尔格林姆实验从来没有执行过,今天才第一次做这个实验。

耶鲁公开课 - 心理学导论课程节选

Now this is not a particularly compelling pace just yet of implementing your own function.

这里没有一个特别的强制性的步骤,来执行你自己的函数。

哈佛公开课 - 计算机科学课程节选