Tdrss
abbr. Tracking and Data Relay Satellite System 跟踪与数据中断卫星系统
🗣️ 情景例句
get some background on the job.
了解这项工程的一些背景。
Do you often study history on Saturday?
你常常在星期六学历史吗？
OK. But I'm afraid I may be a little late.
好。不过我恐怕会稍晚一点到。