Dennisonite
(=davisonite)板磷钙铝石
🗣️ 情景例句
and Mom has all these committees she's on.
妈妈又有那么多的小组会议要开。
Bind the sack before it be full.
做事应适可而止。
With the invention of writing, a great advance was made, for knowledge could then be not only communicated but also stored.
随着书写的发明，又迈进了一大步，因为这样一来，知识不仅能交流，而且能储存了。