welding operator的用法和样例：
例句
- Appropriate welding goggles or welders face shields must be worn when welding or cutting operations are taking place.
进行焊接或切割操作时，必须戴上恰当的焊接护目镜或焊工面罩。 - For electric arc welding in a space with conductive walls or floors, the welder should be provided with an insulating mat or cradle to avoid bodily contact with the walls.
在安装有传导性墙壁或地板的空间进行电弧焊接时，应向焊工提供绝缘垫或支架以避免人体接触到墙壁。
