摩肩接踵
rub elbows; jostle each other in a crowd
购物的人～。There was a jostling crowd of shoppers./街上行人～。The street was jampacked with pedestrians.
摩肩接踵mó jiàn jiē zhǒnɡ
肩挨肩，脚碰脚。比喻人非常多，非常拥挤。jostle each other in a crowd, rub shoulders(elbows) with, be jam-packed with people