Phosphorroesslerite
重磷镁石
🗣️ 情景例句
Great. What's happening with you these days?
非常好。你最近几天怎么样？
Just to be on the safe side.
为安全起见。
One, for instance, consisted of rods of various lengths and thicknesses which would stand up on end like ninepins.
例如，有一种装置是由一些长短、粗细不同的木棒组成；就像九柱戏的木棒一样竖立着，