And its speed is only one kilometer per sec It's much further out. If it's much further out, R the speed will be much lower.

速度只有一千米每秒,在很外面，如果它是在很外面，就大很多，R，is，much，larger，，and，so，you，see,速度会更慢。

youdao

And its speed is only one kilometer per sec It's much further out. If it's much further out, R the speed will be much lower.

速度只有一千米每秒,在很外面，如果它是在很外面，就大很多，R，is，much，larger，，and，so，you，see,速度会更慢。

youdao