Tdr
[计] 时间域反射仪
🗣️ 情景例句
Mr. Marker and his wife have invited me to a Christmas dinner.
马克先生和他妻子邀请我吃圣诞晚宴。
Edward had heard of the famous singer from Europe.
爱德华曾听说过欧洲出身的著名歌星的事。
She put away her compact and smiled kindly.
她放好了粉盒，慈祥地微笑着。