"eager beaver" in Chinese (Simplified)
积极分子干劲十足的人
Definition
指非常努力、充满热情工作的人，经常比别人更积极。
Usage Notes (Chinese (Simplified))
属于口语、幽默用法，可以褒义也可以带点调侃。形容特别积极、主动的人，多用于学生、员工等平级场合，不适合正式场合。
Examples
Tom is such an eager beaver; he always finishes his homework first.
Tom 是个**积极分子**，总是第一个完成作业。
We need an eager beaver to help with this project.
我们需要一个**干劲十足的人**来帮忙这个项目。
Mary is always the eager beaver in class.
Mary 在班上总是那个**积极分子**。
They call him the eager beaver of the office because he's always volunteering for extra work.
大家叫他办公室的**积极分子**，因为他总是主动加班。
Don’t be such an eager beaver—the boss isn’t even here yet!
别这么**积极分子**了——老板还没来呢！
Jessica’s an eager beaver when it comes to planning events—she loves being in charge.
Jessica 在安排活动时是个**积极分子**—她喜欢负责。