Lithos
[医]石
🗣️ 情景例句
because she's had to go to Chicago on a business trip and can't leave till tonight.
因为她得到芝加哥出差，而且要到今晚才能脱身。
When did you do homework?
你什么时候做家庭作业？
its action depends on the surface, water or ground, over which it rides.
它的飞行取决于它所悬浮的水面或地面。