Problems must first of all be recognized.

首先，必须发现问题。

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Proceeding from the realities in China, we must first of all solve the problem of the countryside.

从中国的实际出发，我们首先解决农村问题。

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Therefore to control the economic crimes we must first of all delete the deliberate accounting information distortion.

因此，欲治理经济犯罪，先要治理会计故意性信息失真。

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Best way to lose weight? Well, first of all, you must be active.

减肥最好的办法？嗯，首先，你必须积极主动。

要拥有好身材 - SpeakingMax英语口语达人

"If these chimpanzees are actually motivated by empathy to console victims of aggression, they must first of all be able to recognise that the victim is distressed and then they must know what to do in order to act appropriately to respond to this distress, " said Dr Fraser.

BBC: Hugging benefits fractious chimps

"We thought first of all of the families who must have suffered a serious shock, " he said.

BBC: Murdered pair had bright futures

First of all I must confess, I do trade.

FORBES: The Great Apple Trade?