Sesin
2,4-滴硫钠
🔁 扩展释义
【化】 赛信
🗣️ 情景例句
Bye.
再见。
Who is the greatest writer of our times?
谁是当代最伟大的作家？
He say he'll write a letter soon. He hopes we are all Well.
他说他很快会写信的。他祝我们大家身体好。