Satellorb
模拟人造卫星的观察与研究气球
🗣️ 情景例句
Smokers pollute the air.
吸烟污染空气。
The ox is never woe,till he to the harrow go.
挂耙去耕地，牛才知辛苦。
People will do anything to see a free show -- even if it is a bad one.
人们总要想尽办法看不花钱的演出——哪怕是拙劣的演出。