n.丛；块；沉重的声音
v.用沉重的脚步行走；丛生；使成簇
Which month hospital receives brachial clump nerve best? 哪个月医院接臂丛神经最好了？
It was as if he had hacked with his thick boots at a clump of bluebells. 仿佛他用自己的厚靴子无情地践踏了一丛野风信子。
I held a bit of the hearty earth in my hand to form a hard clump and added it to the bowl. 我用手捧起一点肥沃的土壤，并使其成为硬实的一整块，把它放进碗里。
用作动词 (v.)Fast moving particles, however, cannot clump together on such small scales and, in fact, suppress the clumping of other matter. 可是快速移动的粒子不能以这种小比例范围丛生一起，事实抑制了其它物质丛生。
