Mass is used to describe something which involves or affects a very large number of people.
ideas on combating mass unemployment.
关于解决大规模失业问题的想法。
All the lights went off, and mass hysteria broke out.
所有的灯都熄灭了,大家变得歇斯底里起来。
weapons of mass destruction.
大规模杀伤性武器。
the harm caused by mass tourism.
游客人数过多带来的危害。
masses
A mass of things is a large number of them grouped together.
On his desk is a mass of books and papers.
在他书桌上有大堆的书和文件。
A mass of something is a large amount of it.
She had a mass of auburn hair.
她有一头浓密的棕发。
A mass of a solid substance, a liquid, or a gas is an amount of it, especially a large amount which has no definite shape.
before it cools and sets into a solid mass.
在它冷却成为一块固体之前。
The fourteenth century cathedral was reduced to a mass of rubble.
那座十四世纪的大教堂成了一堆废墟。
the strong temperature difference between the two masses of air.
那两个气团之间强烈的温差。
If you talk about the masses, you mean the ordinary people in society, in contrast to the leaders or the highly educated people.
His music is commercial. It is aimed at the masses.
他的音乐很商业化,针对的是一般大众。
If you say that something is a mass of things, you mean that it is covered with them or full of them.
His body was a mass of sores.
他浑身是伤。
In physics, the mass of an object is the amount of physical matter that it has.
Astronomers know that Pluto and Triton have nearly the same size, mass, and density.
天文学家们知道冥王星和海卫一拥有几乎相同的体积、质量和密度。
the relative atomic mass of each atom within the molecule.
该分子内部每个原子的相对原子质量。
Mass is a Christian church ceremony, especially in a Roman Catholic or Orthodox church, during which people eat bread and drink wine in order to remember the last meal of Jesus Christ.
She attended a convent school and went to Mass each day.
她上了一所由修道院设立的学校,每天都去作弥撒。
Masses of something means a great deal of it.
There's masses of work for her to do.
她有一大堆的工作要做。
masses , massing , massed
When people or things mass, or when you mass them, they gather together into a large crowd or group.
Shortly after the workers went on strike, police began to mass at the shipyard.
工人罢工后不久,警察开始在造船厂集结。