Tdr
[计] 时间域反射仪
🗣️ 情景例句
Have you anything dutiable?
您有应缴税的东西吗？
I slipped on the stairs and fell down.I broke my leg.
我在楼梯上滑倒了并且掉下来我弄断了腿的。
A wet road is usually slippery.
潮湿的路往往是滑的。