Gravisat
重力测量卫星
🗣️ 情景例句
Are you excited about graduating from high school?
你从高中毕业会不会感到很兴奋呢？
How did this happen?
怎么会这样？
I'm sorry to hear that. I hope you're better now.
听说你病 了，我心里很不好受。我希望你现在好些了。