Gravisat
重力测量卫星
🗣️ 情景例句
Bon Voyage!
旅途愉快！
Never think yourself above business.
勿自视过高；不要眼高手低；永远不要认为自己是大才小用。
Half past four. Don't forget to tell Jim. I hope he can come too.
4：30。别忘记告诉吉姆。我希望他也能来。