The coupons aren't actually distributed until a critical mass of people (50 for example) have clicked "Buy."

只有相当数量的人（比如说50人）点击“购买”，优惠券才真正开始分发。

youdao

It requires people to cultivate themselves to establish a critical mass of 'social harmony', which then leads to wider cultivation of individuals and greater harmony.

它要求人们提高自身修养以便建立关键的“社会和谐”整体，这个整体导致个人更广泛的修养和更大的和谐。

youdao

Many crowdfunding solutions look and feel like communities first, building a critical mass of people interested in the concept, but IndieGoGo has always been a commercial venture.

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Like a bar or a club, a social network needs a critical mass of people to be successful the more people it attracts, the more people it attracts.

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But to get to the point where a critical mass of people want to buy a car powered by something other than petrol, it has to make basic economic sense.

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