in a mass

基本解释

In a mass layoff, 50 or more workers are laid off at a time.
大规模裁员，是指50或50个以上的工人同时被解雇的情况。
He also maintained the tradition of choosing leaders in a mass meeting, and people under his rule were able to advance by ability rather than noble birth.
他也保持群众大会选举首领的传统，在他统治下的子民均可凭其能力获得晋升，而不是凭其高贵的出身。
I think that user experience works well in something like this blog and the comments. I don't think it works well in a mass medium where I want to follow hundreds of people.
我认为这一类用户体验在博客和评论上很不错，但我不认为这在一个订阅成千上百好友的大众传媒上也能令人体味个中滋味。

If you have any sort of a mass or growth in your neck at the same time, that would be very suspicious."
It is a double column, You can see, it starts with hydrogen and goes to mercury in ascending order of atomic mass.
双纵栏，你们看到，从氢开始,然后到水银，按原子质量的升序排列。
麻省理工公开课 - 固态化学导论课程节选
And this spin is an intrinsic quality of the electron, it's a property that is intrinsic in all particles, just like we would say mass is intrinsic or charge is intrinsic.
自旋是电子的本征量，它是所有粒子的本征性质，就像我们说质量是本征的或者电荷是本征的。
麻省理工公开课 - 化学原理课程节选

It has another 90, 000 in a mass-market dating service called AmericanSingles.com and 64, 000 in other various groupings.
FORBES: Magazine Article