Kalistrontite
n. [矿]硫酸锶钾
🗣️ 情景例句
Can I help you?
我可以帮上忙吗？
Can I take you out to dinner? It'll be my treat.
我带你出去吃饭好吗？这次我请客。
Politicians agree, in principle,
政治家在原则上同意了， 因此，