Pentitrate
四硝季戊四醇
🗣️ 情景例句
How can you do business with the americans? You'll need to improve your English first.
你怎么能与美国人做生意？你得先提高自己的英文水平。
Do you like skating?
你喜欢溜冰？
What was the population of the world in 1950?
1950年世界人口是多少？