childlike
adjective uk/ˈtʃaɪld.laɪk/ us/ˈtʃaɪld.laɪk/
（成人）孩子般的，单纯的，纯真无邪的
(of adults) showing the good qualities that children have, such as trusting people, being honest and enthusiastic
a childlike innocence/quality 孩子般的天真无邪／气质
All her life she had a childlike trust in other people. 她一辈子都对人怀有单纯的信任。
Compare: childish