Her hair fell over her shoulders in a mass of curls.

她的鬈发披肩。

《牛津词典》

The mechanism had corroded underwater, and many of the gears were stuck together in a mass.

机器在水下已经被腐蚀，许多齿轮都粘成一团。

youdao

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。

youdao

If you have any sort of a mass or growth in your neck at the same time, that would be very suspicious."

VOA: special.2009.09.02

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

Here, hundreds - and perhaps thousands - of unidentified victims lie in a mass grave.

BBC: Dig may lay Spanish poet mystery to rest

Mr Qadri's march from Lahore to the capital culminated in a mass rally on Monday evening.

BBC: Pakistan government seeks end to cleric Qadri's protest

His march from Lahore to Islamabad culminated in a mass rally on Monday evening.

BBC: Pakistan deal reached to end cleric Qadri's protest