bunching造句

They were bunching up, almost treading upon each other's heels.
他们几乎脚尖踩着脚跟地挤作一团。

The wave nature of the particle produces a bunching effect.
粒子的波动性质产生了成群的效应.

The wood - cutter is busy bunching.
樵夫在忙于捆柴.