They found that the principal requirement for what is called "global cascades" - the widespread propagation of influence through networks - is the presence not of a few influentials but, rather, of a critical mass of easily influenced people.
他们发现，所谓"全球连锁反应"——即通过网络广泛传播影响力——的主要条件并不是少数影响力者，而是存在一大批容易被影响的人，即所谓的临界质量。
critical
关键的
scientific work calls for a critical mind.
科研工作需要批判性思维。
It was not until the mid-1980s, when amplifying age and sex differences became a dominant children’s marketing strategy, that pink fully came into its own, when it began to seem inherently attractive to girls, part of what defined them as female, at least for the first few critical years.
直到20世纪80年代中期，当放大年龄和性别差异成为儿童市场营销的主要策略时，粉色才真正大放异彩，开始被视为女孩与生俱来的吸引力，成为定义她们为女性的一部分，至少在最初几年的关键时期是如此。
critical
关键的
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。