Tetrahydrobutene
四氢丁烯
🗣️ 情景例句
His personality left a deep impression on us.
他的人品给我留下了深刻的印象。
Who is the guy over there?
那边那个人是谁？
Before very long the parents will be complaining that the child is so secretive and never tells them anything,
不要很久，家长就会抱怨孩子守口如瓶，什么事也不告诉他们，