Kalistrontite
n. [矿]硫酸锶钾
🗣️ 情景例句
That's not the issue.
那不是我们讨论的话题。
I can't promise anything,but I'll do my best.
不敢保证，不过我尽力而为。
We're going to leave at about seven thirty next Monday morning.
我们打算下星期一早上7：30 左右出发。