Concn
abbr. concentration 集中; 集合; 专心; 浓缩
🗣️ 情景例句
He is tough in doing everything.
他不管做什么事都很有毅力。
A thing is bigger for being shared.
插手人一多，事态就扩大。
We are going to have the final examination next week.
我们下周举行期末考试。