on no occasion

基本解释

On no occasion must you accept any money if he offers it.
他假如给你钱，你可绝不能接受。
On no occasion should you try to cheat others, for they find you dishonest, they will never believe you anymore.
你在任何场合都不要欺骗别人，因为一旦他们发现你不老实，他们再也不会相信你了。
MPs demanded that "on no occasion should the UK government approve any derogation from the shark finning legislation in order to allow UK-registered vessels to remove shark fins at sea".
国会议员要求，“在任何情况下，英国政府都不应为了让在英国注册的船只在海上猎取鱼翅而废除禁止鱼翅的律法。”

Things go wrong that you have no control over, and, on occasion, things also go right, and you have no control over those, either.
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However, these leaders in government have the duty to act responsibly, to prioritize our spending within our ability to pay for it, and to at least on occasion, say no.
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Having Roach come by on a Sunday afternoon was no casual occasion, but it turned out well.
NPR: Max Roach Memorial Show