unloaded antenna

例句：

1. 1. The engineer unloaded the antenna from the truck and began to install it.
   工程师从卡车上卸下天线，并开始安装。
2. 2.The company decided to replace the old antenna with an unloaded one for better reception.
   公司决定用一个未装载的天线来提高接收效果。
3. 3. The technician carefully unloaded the antenna from its packaging and inspected it for any damage.
   技术员小心地从包装中卸下天线，检查是否有损坏。