combined cutting and welding torch

例句：

1. 1. The engineer used a combined cutting andwelding torch to cut through theconcrete.
   工程师使用了一个组合切割和焊接焊枪来切割混凝土。
2. 2. Theconstruction crew was using acombined cutting and weldingtorch to prepare the site for thenext phase of work.
   建筑工人正在使用一个组合切割和焊接焊枪来准备下一个工作阶段的场地。
3. 3. Thetechnician demonstrated how to usea combined cutting and welding torch safely.
   技术员演示了如何安全地使用一个组合切割和焊接焊枪。