Tricon
abbr. Triple Coincidence Navigation （有三个地面台的）雷达导航系统（特利康导航系统）
🗣️ 情景例句
Did you finish the ...?
你完成了……吗？
Circumstances are therulers of the weak, instrument of the wise.
弱者困于环境，智者利用环境。
Did you know he was having an affair?
你知道他有外遇了吗？