1、一群
... a herd of cows一群奶牛 a crowd of一群(用于人) preserve v.保护，保存(经过特殊手段而保存下来) ...
2、用于人
... a herd of cows一群奶牛 a crowd of(用于人) preserve v保护 ...
a large crowd of一大群的;一大群;一大群人
a big crowd of一大群
a large crowd of people一大群人
a great crowd of people一大群人
a big crowd of people一大群人
a moving crowd of people人群
a crowd of papers一大堆试卷
a crowd of book一堆书
a crowd of people一群人;一大群人;没有次序的人群;聚集的人群