bottom wire

例句：

1. 1. The electrical system needs to be checked for any damage caused by the heavy rain.
   电力系统需要检查，以确定由于大雨造成的任何损害。
2. 2.The engineer carefully inspected the bottom wire of the transformer to ensure its integrity.
   工程师仔细检查了变压器的底部电线，以确保其完整性。
3. 3. The bottom wire had been damaged during the installation process, which could lead to a short circuit.
   在安装过程中底部电线受损，可能导致短路。