Herderite
磷铍钙石
🗣️ 情景例句
And my phone number is 797-7963.
我的电话是797-7963。
He must have three more weeks of rest before he is released.
他在出院以前，还需要三周时间的静养。
That was a long time ago,wasn't it?
那是好久以前的事了。是吗？