grownup ['grəʊnʌp]

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附加级

n. 成人

It was really frightening for a 9-year-old boy to confront a grownup. 这样的事对一个9 岁的小男孩来说是觉得挺委屈的。
Oh, grownup for heaven's sake! 噢，快别耍孩子脾气了！