box antenna

例句：

1. 1. The box antenna is a popular choice for outdoor broadcasting.
   盒形天线是户外广播的热门选择。
2. 2.The engineer designed the box antenna to enhance the signal reception.
   工程师设计了盒形天线来增强信号接收。
3. 3. The box antenna has become a standard feature in modern smartphones.
   盒形天线已成为现代智能手机的标准功能。