Davisonite
[矿]板磷钙铝石
🗣️ 情景例句
The bad news hit everyone hard.
恶耗使每个人都受到了沉重打击。
Do you like cats?
你喜欢猫？
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。