You may just as well tell me the truth.

你告诉我真相也无妨.

《简明英汉词典》

We may just as well buy a new frying pan.

我们不妨买一只新煎锅.

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You can tell me what you think, and you may just as well be frank.

你心里想什么就告诉我吧, 还是坦率些好.

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Tell me what you think -- and you may just as well be frank.

请告诉我你的想法, 并请坦率地讲.

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