Kalistrontite
n. [矿]硫酸锶钾
🗣️ 情景例句
She is unwilling to participate.
她不愿意参加。
To youth I have but words of counsel -- work, work, work.
对青年人，我要奉劝几句话∶工作，工作，再工作。
You got a good deal.
你买得真便宜。