Gravisat
重力测量卫星
🗣️ 情景例句
Here they are. Family Album, U.S.A.
就在这里。美国写真！
You're bound to feel that way at first, I guess.
我想，一开始都会有这样的感觉。
But, in contrast, it is only in modern times that Galileo has become a problem child for historians of science.
但是相比之下，只是在现代对于科学史家来说，伽利略才变成一个新的难题。