a mass of

基本解释

Garden plant whose capsule discloses when ripe a mass of seeds resembling a blackberry.
一种园林植物，蒴果成熟时开裂，散出大量的种子，象一种悬钩子。
Yet, when it comes to respecting the rights of a mass of anonymous individuals, we might not be so responsible.
然而，当涉及到尊重众多的无名小辈的权利时，我们很可能就不那么认真负责地对待这些问题了。
But people found afterwards that, actually a mass of Japanese house wives were doing this, while it’s very hard to stop house wives to do this.
但是，后来人们发现，实际上是大量的日本家庭主妇在做这件事情，而要想制止家庭主妇做套利交易，难度非常大。

She was trying to gather strength and courage to push through a mass of busy shoppers.
0 And it has a mass of 9.11 times 10 to the minus 31 kilograms The charge compensation comes out of the nucleus with the proton and it is positive 1.6 times 10 to the minus 19 coulombs.
它的质量是9。11乘以0,到负31千克,电荷补偿来自于,有质子的原子核,它是+1。6*10^库伦。
麻省理工公开课 - 固态化学导论课程节选
A typical problem that you may have done in your first pass at Newton's law, someone tells you a force of 36 Newtons is acting on a mass of whatever, 4 kilograms; what's the acceleration?
在你们第一次接触牛顿定律时,可能见过这么一道典型题目,告诉你,一个 36 牛的力,作用在一个物体上,4 千克吧,问加速度是多少
耶鲁公开课 - 基础物理课程节选

Once in print Howard's theory spread like a mass of nimbus clouds in a tropical storm.
FORBES: Head in the Clouds