Xonotlite
硬硅钙石
🗣️ 情景例句
This will make a nice gift for Marilyn and Richard.
这是给Richard和Marilyn的一件好礼物。
No safe wading in an unknown water.
未知水深浅，涉水有危险。
Inevitably the repair job was not quite so simple.
事实上，修理工作远不是那么简单。