crowdn.人群；群众；大群；朋友v.拥挤；挤满；涌入；贴近；逼迫crowding level聚集度,密集度crowd together挤在一起crowd our luckvi.在很有利的形势下作多余的冒险(期望好运持续)Crowd research人群研究crowd-pleasern.使观众高兴的人；指形容总是能取悦观众的人crowd behaviour群众行为crowding around“围拢”现象Crowd detection人群检测crowd-surfingn.人群冲浪crowding effect群集效应

1. More cars have to be put on during the rush hours.
   在高峰时间不得不增加车辆以供使用。
2. How many pounds did you put on over Christmas?
   你过完圣诞节後体重增加了多少磅？