torch soldering

例句：

1. 1. The technician used a torch to solder the joints together.
   技术员使用焊枪将接头焊接在一起。
2. 2. During construction, it's important to ensure that all connections are properly soldered.
   在施工过程中，确保所有连接都正确焊接是很重要的。
3. 3. The repairman used a torch to solder the broken wires back together.
   修理工使用焊枪将断裂的电线重新焊接在一起。