Simple collision theory
[化] 简单碰撞理论
🧩 词语组成解析
🗣️ 情景例句
We were very young.
我们那时很年轻。
There have been many ups and downs in our marriage, but we still love each other.
我们的婚姻有很多坎坷，但我们依旧相爱。
He goes to Chinese classes every week.
他每周都要去上汉语课。