Harvest the center flower-bud cluster of broccoli when it reaches the size you want and while the buds are still tightly together.

VOA: special.2010.03.09

If I get you down to a cluster of about 30 water molecules, the boiling point is a function of the size of the water droplet.

如果对于一个由30个水分子,组成的簇，沸点是,水珠尺寸的函数。

麻省理工公开课 - 固态化学导论课程节选

Let me cluster them because really what I have, sorry, separate them out. I've gone from one problem size eight down to eight problems of size one.

让我把它们聚集起来，因为已经得到我想要的，抱歉，把它们分开来,现在我从一个长度为8的问题,得到了八个长度为1的问题。

麻省理工公开课 - 计算机科学及编程导论课程节选