Tervalence
[化] 三价\\n[医] 三阶
🗣️ 情景例句
Speaking of school, how are your grades this term?
谈到学业，你这学期的成绩如何？
One cannot put back the clock.
光阴一去不复返。
We have new methods like compensation trade and joint ventrue.
我们有补偿贸易和合资经营。