There is no generally accepted definition of how large clusters of molecules must become to be particles . 关于多大的分子团才能称为粒子，还没有一致公认的定义。
A configuration is a connected cluster of vertices of a plane graph together with the degrees of the vertices . 一个构形是面图的一连串连通的顶点与这些顶点的度。
Methods used to identify the clusters which should be distinguished are commonly called "clustering procedures" . 用于鉴定一些将要区分的聚群之方法通常称为聚类过程。
If one counts distant clusters in the absence of a nearby cluster, one evaluates the first term . 如果我们在没有邻近星系团的情形下计数遥远的星系团，则可得出第一因子。
Acid storage tank should also be clustered nearby to minimize sludge and scale formation in long lines . 酸的贮槽也应该集中于厂房附近，以尽量减少在长管线中沉积污泥和疤垢。
He lit a cigarette and gazed down again at the men clustered in the rectangular box of the troop well . 他点上一支烟，又盯着看下面象个长方形的箱子的载兵舱里攒攒簇簇的士兵们。
Such early thinning reduces the supply of gibberellins by reducing the number of seeds per cluster of fruit . 这种早期疏果方式可减少每一果丛的种子数目，从而使赤霉素供应减少。
They turned around and ran to the gate where others had already clustered to see what was happening . 他们转过身来跑到前边大门那里，那儿早已围聚着好多的人在瞧着发生了什么事情。
The lights of the hotel and the cottages became yellow dots, a cluster of glow-worms at the base of sachem mountain . 旅馆和棚屋的灯光变成了小黄点，宛如萨钦姆山脚下的一群萤火虫。
The touch of a cluster of leaves revolved it slowly, tracing, like the leg of transit, a thin red circle in the water . 一堆落叶使它慢慢旋转，像经纬仪一样，在水上转出一道细细的红圈子。
