schoolboy

男学生、男生

A group of schoolboys in uniform waited quietly at the bus stop.

一群穿著制服的男学生安静地在公车站等车。

幼稚的、不成熟的多用于名词前

His schoolboy humor annoyed everyone in the meeting.

他那种幼稚的幽默感让会议上的每个人都很不耐烦。

低级的、不该犯的英式，常用于 schoolboy error

Forgetting to save the file was a real schoolboy error.

忘记存档真是个不该犯的低级错误。