assistant

The shop assistant helped me find the right size of blue jeans in the crowded store.

(Chinese) 店员帮我在拥挤的商店里找到了尺寸合适的蓝色牛仔裤。

The professor's research assistant spent the entire afternoon organizing data in the science lab.

(Chinese) 教授的研究助理整个下午都在科学实验室整理数据。