Gravics
重力场学, 引力场理论
🗣️ 情景例句
When is check-out time?
什么时候必须结帐和离开宾馆？
We must not lie down, and cry, God help us.
求神不如求己。
so it was easier for the detective to watch her.
因此，侦探比较容易监视她。