This was not the time to take risks; he knew he should play it by the rule book.

这不是冒险的时候，他知道他应该按规则行事。

《柯林斯英汉双解大词典》

In any case EU positions are often undermined by individual countries pursuing their own interests, opening the way for Russia to play divide-and-rule, especially over energy.

不管怎样，欧盟的地位经常会被单独追求一国利益的国家削弱，为俄罗斯各个击破创造条件，尤其是在能源方面。

youdao

We must play the game by rule.

我们必须按照规则进行比赛。

youdao

Instead, play by the rule--your business acumen--that first allowed you to generate the wealth that you are now deploying in the stock market.

FORBES

Acknowledging the real war of ideas in Egypt and refusing to play the by the rule of this devious political game is the only way America can reclaim her role as a defender of those people seeking genuine liberty.

CENTERFORSECURITYPOLICY: Egypt: Radicalizing the Political Bargain, Part I

Reggie Greenwood, the conference coordinator of officials, said afterward that because the play happened during a dead ball, by rule the foul was a technical.

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