天真无邪

innocence

1. 玛丽看上去天真无邪，但是她十分成熟，而且很有学问，这说明不能以貌取人。
   Mary may look innocent and naive but she's very mature and knowledgeable, so it shows that you can't judge a book by its cover.

天的英语翻译：

真的英语翻译：

无邪的英语翻译：