: 任意的 随机的 随意的 n. 
直接的 
random 
direkt like: Random → →
throw at random a ball on one of one’s suitors ☊ 
gieo cầu ☊ a random attack ☊ việc tấn công bừa bãi ☊ The interviews were given to a random sample of students. ☊ sample ☊
select sb/sth: a randomly selected sample of 23 schools ☊ select ☊
the random selection of numbers ☊ selection ☊