wet behind the ears片语

初出茅庐、涉世未深、乳臭未干口语

He was still wet behind the ears when he joined the firm.

他刚进这家公司时还很涉世未深。

初出茅庐的、没经验的用于名词前

A wet-behind-the-ears reporter was sent to cover the trial.

报社派了一个初出茅庐的记者去采访这场审判。