一种基站天线，有几个部分。长而垂直的是与手机通讯的部分，而圆的则是通过控制器与基站链接。
An antenna of a base station, it has some sectors. The vertical communicates with mobile phones, the round one connects the base station with a controller.
路由器的两根天线保持垂直可以确保家庭网络和手机、手提都连得上且信号佳。
Keeping a router's antennas perpendicular to each other will ensure a solid connection between your home network and your smartphones and laptops.
如果你的路由器天线是平行的，就该转动下，让天线相互垂直。
If yours are parallel, it's time to switch things up and go perpendicular.
应用推荐