lab coat

例句：

1. 1.The scientist wore a lab coat to protecthimself from the chemicals.
   科学家穿着实验室工作服来保护自己免受化学物质的伤害。
2. 2. The engineerwas wearing a lab coat when he enteredthe room.
   工程师进入房间时穿着实验室工作服。
3. 3. The technician changed into a labcoat before starting the experiment.
   技术人员在开始实验前换上了实验室工作服。