random

random
adjective
  1. made, done, happening, or chosen without method or conscious decision
    胡乱的,无一定之规的;任意的;任意选取的
    a random sample of 100 households.
    随机抽取的100户家庭样本。
    ■(Statistics)governed by or involving equal chances for each item
    (统计)随机的
    ■(of masonry) with stones of irregular size and shape
    (砖石建筑)石头大小不一的(或规格不一的、形状不一的)
常用词组
at random
  1. without method or conscious decision
    胡乱地;随便地,任意地
    he opened the book at random.
    他信手打开书本。
派生
randomly
adverb
randomness
noun
语源
  1. Middle English (in the sense 'impetuous headlong rush'): from Old French randon 'great speed', from randir 'gallop', from a Germanic root shared by rand
英语宝典
考试词汇表