So far, machines have a pretty hard time emulating creativity, arbitrary enough not to be predicted by a computer, and yet more than simple randomness.
2019年6月六級真題（第三套）閱讀 Section C
柯林斯高階英漢雙解學習詞典釋義
ADJ
任意的；隨機的；偶然的
A random sample or method is one in which all the people or things involved have an equal chance of being chosen.