Spodiosite
氟磷钙石
🗣️ 情景例句
How can I reward your help?
我怎样才能报答你的帮助呢？
I ought to take her home.
我应该送她回家。
Relatively few people are prepared to sacrifice holiday time for the pleasure of travlling by sea.
没有多少人会为享受坐船旅行的乐趣而牺牲假期的时间。