The new rules will become effective in the next few days.

这些新条例将在接下来的几天内生效。

If we want students to become effective in multicultural settings, one thing is clear: there is no substitute for practice.

如果我们想让学生们在多元文化环境中变得高效的话，有一件事情是很清楚的：没有什么能代替实践。

When does the new system become effective?

新制度何时生效？

But we also need it to become effective citizens.

然而我们也需要劳动力变成高效的公民。

He asked, "When can the new system become effective?"

他问道：“这个新系统什么时候生效？”