Spodiosite
氟磷钙石
🗣️ 情景例句
we're not sure
我们还不能肯定
It's just the matter of the schedule,that is,if it is convenient of you right now.
如果你们感到方便的话，我想现在讨论一下日程安排的问题。
Do you know my number?
你知道我的号码吗？