grownup

Oh, grownup for heaven's sake!

噢, 快别耍孩子脾气了!

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He acts as if he was a grownup.

他举止行为像个大人似的.

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So why don't you be a grownup and come watch TV in the fort?

所以为什么不成熟点进城堡一起看电视?

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