critical mass
[英][ˈkritikəl mæs][美][ˈkrɪtɪkəl mæs]
临界物质;
例句:
1.
But then critical mass was reached over a stunning two-week period last september.
但去年9月的两周内危机超过了
临界点。
2.
It needs a critical mass of ad space and advertisers to realize the technology'spotential.
它还需要大量的广告空间,以及那些可认识到其技术潜力的广告客户
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