Tou
abbr. 追踪装置（Trace Operate Unit）
🗣️ 情景例句
How do I do that?
我该办什么手续呢？
Should I take the bus?
要乘公共汽车吗？
'Do you always catch such an early train?' asked the inspector.
“您总是赶这样早的火车？”探长问。