Gravisphere
n. [天]引力層( 指以一個天體的引力為主的球形區域)
??? 情景例句
I think I'll go along with your proposal.
我想我支持你的提議。
It is never too old to learn.
為學不怕年高。
Some people have compared books to friends.
有些人把書比作朋友。