We need to get down to the serious business of working out costs.

我们该认真地把成本算出来了。

《牛津词典》

She always attends to her own serious business herself, as then she is sure of having it done properly.

她总是亲自料理自己的正经事，因为那时她肯定能把它做好。

youdao

Note: Stalking is serious business.

注意：追踪是很严重的事情。

youdao

Republicans say that budget shows the president is not really serious about helping small business.

VOA: standard.2009.03.16

We have no choice but to understand that Milton's mask is serious business The whole production is one of the utmost seriousness.

我们没有选择只能理解《面具》是件很严肃的事,整个演出都是很严肃的事情。

耶鲁公开课 - 弥尔顿课程节选

John Kerry may have trouble telling jokes, but he knows how to get down to serious business.

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However, underlying the reckless trading is the serious business of running a long-term portfolio.

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The startup is often slammed for its struggle to adopt a serious business model.

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