So we've consistently said by the end of the year, on the current glide path,68,000.

VOA: standard.2009.10.13

That is what makes metal so fascinating, because metallic bonding allows the atoms to glide over one another without resulting in catastrophic failure.

所以这就使得金属具有了特别的性质，因为金属键使得原子可以,在彼此之间流动,而不会千万灾难性的后果。

麻省理工公开课 - 固态化学导论课程节选