Hygrostatics
温度比学
🗣️ 情景例句
Thank you, Dr. Stewart.
谢谢你，Stewart大夫。
Which one is heavier?
哪一个是较重的？
The underground railway runs 24 hours a day, and there are all-night cinemas, bars and restaurants.
地铁一天24小时不停地运营。还有通宵电影院、酒吧间和餐馆。