Bunch-up交通堵塞
bunch up thed ody团身
bunch the flowers up把花朵束成一把
Don't bunch up不要挤在一起;要分散开
bunch of tuend up being管束
finned tuend up being bunch肋管束
PHRASAL VERB（动词词组） If people or things bunch up or if you bunch them up, they move close to each other so that they form a small tight group. Bunch together means the same as . 聚集
They were bunching up, almost stepping on each other's heels.
他们正挤在一起，几乎踩着彼此的脚跟。