dos and don-ts

MOST people regard grammar books and dictionaries as a codified set of rules prescribing DOS and don 'ts.

大多数人把语法书籍和字典当作是编纂好的一套规则，规定着孰是孰非。

But some capital controls are more excusable than others. To help distinguish good controls from bad, some DOS and don 'ts endorsed by the G20 might help.

有些对资本的控制更能得到认可，因此，为了能从差的政策中分辨出好的政策，G20达成的允许和禁止事项可能会起到作用。

After the first stage of experimentation, what are the DOs and DON 'ts of location-based marketing; are check-ins, discounts and freebies all there is to it?

在第一个试验期过后，地理位置服务能做与不能做的，收费的、打折的、免费的地方就会变得很清晰。