childishly
adv. 天真地,幼小地;幼稚地
例句
Stop childishly messing around.
别孩子气般地捣乱。
You should not behave childishly at your age.
在你这个年龄做事不应该孩子气。
Loosen your hands, step into life very childishly.
松开你的手,要极其天真地步入生命。