random

柯林斯詞典

1. ADJ A random sample or method is one in which all the people or things involved have an equal chance of being chosen. 隨機(jī)的
The survey used a random sample of two thousand people across the Midwest. 這項(xiàng)調(diào)查使用的是對中西部地區(qū)2000人的隨機(jī)取樣。
2. randomlyADV 隨機(jī)地[ADV with v]
...interviews with a randomly selected sample of 30 girls aged between 13 and 18. …對隨機(jī)抽取的30名年齡在13至18歲之間的女孩的訪談。
3. ADJ If you describe events as random, you mean that they do not seem to follow a definite plan or pattern. 隨意的
...random violence against innocent victims. …對無辜受害者的隨意攻擊。
4. randomlyADV 隨意地[ADV with v]
...drinks and magazines left scattered randomly around. …隨意四處散落的飲料和雜志。
5. PHRASE If you choose people or things at random, you do not use any particular method, so they all have an equal chance of being chosen. 隨機(jī)地
We received several answers, and we picked one at random. 我們收到了好幾個(gè)答案，就隨機(jī)地揀選了一個(gè)。
6. PHRASE If something happens at random, it happens without a definite plan or pattern. 隨意地
Three African-Americans were killed by shots fired at random from a minibus. 3名非洲裔美國人被從一輛小型公共汽車中胡亂射出的子彈打死了。

And what might be the underlying significance of these supposedly random acts of violence ?
To my untutored eye that just looks like a load of random brush strokes and yet it's a very valuable painting .
It seems that the attack was a random act of violence .
The survey was carried out among a random sample of voters .
The security guards carried out random checks on people entering the building .