That's equal to seven minus six minus two 3 times 4.19, or 4.19 plus 2.3.

算出来是7-6-2*4。19的平方,或者4。19加2。

麻省理工公开课 - 固态化学导论课程节选

We started with just the seven metals and carbon plus sulfur, it was the point of departure for Democritus.

我们开始讲了7种金属,还有碳和硫磺，那就是Democritus的起点。

麻省理工公开课 - 固态化学导论课程节选