The key is to create a critical mass of leaders to usher in change.

这一切的关键在于，要培养出数量足够庞大的领导人来引导变革。

So in recent years the fear it engenders has started to reach a critical mass.

近年来艾滋病所引发的恐惧已经达到了临界程度。

We just need enough of a critical mass to turn things in a more positive direction.

我们只需要有足够数量，能起决定性作用的郡众，就能把事情转移到更为积极和正确的方向上来。

No one study made a big splash in 2007, but the evidence has reached a critical mass.

没有一项研究在2007年激起了巨大的反响，但是这些证据却引起了激烈的评论。

Because to survive, any species needs to maintain a critical mass of population.

因为任何物种要存活都必须维持庞大的数量。

You could have a critical mass of countries that say they can no longer subject our economies to U. S.

可能会有相当多的国家说它们不能再让自己的经济受美国经济和外交政策指挥了。

To give the market confidence in the viability of the MidAm exchange, there had to be a critical mass of buyers and sellers.

中美交易所要想生存，就必须有足够的买家和卖家。

Theory predicts that a white dwarf star will explode when infalling matter from a companion star increases the mass of the white dwarf beyond a critical mass limit, known as the Chandrasekhar limit.

理论预言，当来自伴星的物质让白矮星的质量增加到了临界质量极限即钱德拉塞卡极限时，白矮星就会爆发。

Once there were more than five female managing directors in the division—a critical mass—the negativity and grumbling began to die down.

部门一度出现了超过5位女性主管的局面，直到这时，批评与抱怨才渐渐消失。

If there is a critical mass of Android users out there waiting to spend money on apps, developers will jump through hoops to tap that market.

如果Android使用者中有一批挑剔人物等着为应用花钱，开发者们会赴汤蹈火的开发这个市场。