wet behind the ears

基本解释

He was new and wet behind the ears so he became the target of all those tricks of the other boys.
他是新來的，又不老練，因而成了別的男孩耍花招的目標。
When Zhang first entered university, he was still wet behind the ears. "I had the ambition and passion to make a difference, but I didn't know how, " he says.
初進大學的張博林也是懵懵懂懂，他說那時的自己“雖然野心勃勃、熱情滿滿想要有所作爲，但是卻不知道從何下手。”
That's often because entrepreneurs who are wet behind the ears don't realize that they should calculate their borrowing needs based on their worst-case scenario instead of their best-case forecast.
這種情況常常是因爲初出茅廬的創業者沒有意識到他們應該根據最壞的而不是最好的預測來計算他們所要借出多少錢。

When he was still wet behind the ears, he and Stanislas Yassukovich came up with the idea of creating for these markets a negotiable certificate of deposit.
ECONOMIST: Michael von Clemm
It's a Cinderella story, but the problem is that the filmmakers haven't given us any reason to root for their wet-behind-the-ears Cinderella except that everyone else is being mean to her.
NPR: Friday Movies: Superman and the Devil
He snared Dan Rather when Mr Rather was still a wet-behind-the-ears White House correspondent.
ECONOMIST: Howard Gotlieb