Epitron
电子和π介子束碰撞系统
🗣️ 情景例句
Friends, teachers....
朋友 老师……
In my opinion, the product must be priced under $ 300.
就我的意见来说，产品价格必须订在300美元以下。
'I'm trying to repair the bell,' answered Bill.
“我想把这口钟修好，”比尔回答说。