The new rules come into operation from next week.

新规定从下周起实施。

Chinese garbage classification policy has come into operation in several cities.

中国垃圾分类政策已经在多个城市生效。

When does this new law come into operation?

这项新法律什么时候生效？

When does the law come into operation?

新的法律什么时候生效？

When does the plan come into operation?

这项计划什么时候实施？