Fersmanite
硅钛钙石
🗣️ 情景例句
No, you needn't do that.
不行呀，你不必这样。
I ran all the way to school, otherwise I'd have been late.
我一路跑到学校，不然就迟到了。
I'm afraid it is quite common that people steal things from their workplace.
恐怕人们在工作场所偷东西是相当普遍的。