短語詞組短語at t random 隨機地;隨意地Draw at Random 任選test at random 隨機檢驗Not Missing At Random 非隨機缺失;非隨機;缺失;隨機unblock at random automatically 自動存包柜select at random 任意挑選;隨便挑選sample taken at random 任選樣品dress at random 衣著不整missing at random MAR 隨機缺失 返回 at random