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。

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If you have weak or brittle nails, understand the do's and don 'ts of various nail care products.

如果你的指甲柔弱易损，要知道不同指甲保健产品的须知有哪些。

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Some preschool directors offered several do's and don 'ts.

几位幼儿园主管提出了一些注意事项。

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We asked Day, who has a few DIY recipes of her own in her book, "Forget the Facelift, " to guide us through the "dos and don'ts" of homemade beauty treatments.

CNN: Do's and don'ts for DIY skin care

On the "don'ts" list: lying, says Sachs.

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To reinforce her message, Dame Sally has issued a list of "dos and don'ts".

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