但是地心引力定律没有解释什么是地心引力，也没有解释它为何会发生。

But the law of gravity doesn't explain what gravity is or why it might work in this way.

youdao

但是地心引力定律没有解释什么是地心引力，也没有解释它为何会发生。

But the law of gravity doesn't explain what gravity is or why it might work in this way.

youdao