Radiostrontium
n. [化] 放射性锶
🗣️ 情景例句
She had to work her way through law school.
她必须半工半读学法律。
He that marries for wealth sells his liberty.
为财富而结婚就是出卖自由。
Oh, there's the conductor. Do you have your ticket?
啊，列车员来了。票在你那儿吗？