callow

这个年轻实习生虽然聪明，但言行举止仍显稚嫩。

The young intern is smart, but his ___callow behavior shows his inexperience.

他在专题讨论会上关于国际贸易的幼稚言论暴露了他对这个议题理解得有多浅薄。

His ___callow remarks about international trade during the panel discussion exposed how little he understood the complexity of the issue.

那个稚嫩的大一新生被说服将自己全部的积蓄投进了一个陌生人运营的可疑商业项目里。

The ___callow college freshman was persuaded to invest his entire savings in a dubious business scheme run by a stranger online.