ran·dom/`rændəm; ˈrændəm/ adj 1 at random if you choose something at random, you give each of the things within a group an equal chance of being chosen 随机的: Winning lottery numbers are chosen at random. 中奖的彩票号码是随机选取的。 2 happening or chosen without any definite plan or system 随便的; 任意的; 胡乱的: a random survey 随意的调查