Valerce
原子价(化学)
🗣️ 情景例句
Where do you like to live, in the city or in the country?
你喜欢住在城市还是乡村？
Everything is going according to schedule.
一切在按照预定计划进行。
Has it got anything to do with your present research?
报告跟你目前的研究有关吗？