"Will it happen again?"— 'I hope not. but you never know.'

“这事还会再发生吗？”——“但愿不会，但谁知道呢。”

柯林斯例句

Not as I know of. Damn your eyes, I hope not. Why?

当然不. 狗咬吕洞宾,不识好人心, 我可不想这样, 为何?

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Hope not sunshine ev'ry hour , Fear not clouds will always lower.

不要企望时时阳光明媚, 乌云哪会总是蔽日遮天.

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Will it be windy tomorrow? - I hope not.

明天会刮风 吗 ? - 但愿别刮风.

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I hope not so. Imprudence or thoughtlessness in money matters would be unpardonable in me.

但愿不会如此. 我要是在银钱问题上粗心大意,那是不可原谅的.

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