She told herself to act cool.

她告诉自己要冷静行事。

youdao

I tried to act cool by spinning my pencil and doing tricks with it while we talked.

我装作很酷地不停转着笔玩各种花样。

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'Geo-engineering plans to inject stratospheric aerosols or to seed clouds would act to cool the planet, and act to increase the extent of sea ice,' says Rasch.

拉施说：“地球工程计划将平流层的气溶胶注入到云层中，这将起到冷却地球的作用，并增加海冰的范围。”

youdao

The first rule of cool is to not act cool.

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It reminds me of a well-rehearsed magic act that involves transforming the concept of cool into a bankable currency, time and again.

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To ingratiate themselves to college customers, online booksellers run ads in school newspapers and hire students to act as roving ambassadors tactics that are long on cool and less expensive than traditional marketing methods.

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