abbr. Education Document Reproductive Service [美国]教育文献复制服务处; engineering data retrieval system 工程数据检索系统; [计]= Engineering Data Retrieval System,工程数据检索系统
🗣️ 情景例句
International travel involves a lot of waiting around in airports.
经常在机场等候是环球旅行的一部分。
What's all this noise?
这可怕的声音是什么?
When it has been decided where we are going to drill, we put up at the surface an oil derrick.