Gravisat
重力测量卫星
🗣️ 情景例句
I'm sorry, Carl.
很抱歉 Carl。
He doesn't like to talk about political matters.
他不喜欢谈政治的事情。
Suddenly, a middle-age lady got on the train and sat opposite Sally.
突然，一个中年妇女上了火车，坐在萨莉的对面。