Bergmannite
假钠沸石
🗣️ 情景例句
The leader takes the first ten cards
指挥拿出上面的十张牌，
He's been out of a job for months.
他已经失业好几个月了。
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.
某些大公司进行的研究属于一般和基础性的研究。因此不保密对他们才有利。