childlike

形容词 childlike:

1. befitting a young child
   同义词：childly
2. exhibiting childlike simplicity and credulity
   同义词：wide-eyed, round-eyed, dewy-eyed, simple

1. Although thirty, he is childlike.
   尽管他已三十岁了，但还是孩子般的无邪。
2. His father has childlike enjoyment.
   他的父亲有孩子似的欢乐。

child.like

adj.（形容词）
Like or befitting a child, as in innocence, trustfulness, or candor.
儿童般的：如在单纯、轻信、坦率等方面上如儿童般的或适合于儿童的