Clide
放射性核素浓度
🗣️ 情景例句
Which part of the paper do you read first?
你会先看报纸的哪一部分？
Will you sign with our contract at this price?
你能以这个价钱在合约上签字吗？
Can you see him please?He has a bad cold, too!
您能看看他吗？他也得了重感冒！