random: ad.“任意的，随机的”n.“随机” e.g. a.The dean asked some random students to join in a discussion. 院长任选几个学生参加讨论。 at random“随机地，胡乱地” b.When he buys the lottery tickets he likes to choose numbers at random. 他买彩票时喜欢随机选号。 random: adj. “任意的，随机的” n. “随机” e.g. a. The dean asked some random students to join in a discussion. 院长任选几个学生参加讨论。 at random “随机地，胡乱地” b. When he buys the lottery tickets he likes to choose numbers at random. 他买彩票时喜欢随机选号