crowde地下室crowdn.人群；群众；大群；朋友v.拥挤；挤满；涌入；贴近；逼迫crowding - out effect挤出效应crowd density estimation人群密度估计crowd-following effect从众效应crowding in or out effect挤入挤出效应Crowds lined the route.一群人沿路排成一行。Crowding-out hypothesis挤出（效应）假说Crowds of people passing by人群穿梭Crowd into those last hours挤进最后的时刻Crowds of Christmas shoppers成群的购买圣诞节物品的人crowded metropolitan streets繁忙拥挤的大城市街道