at randomCHANCE/BY CHANCEwithout any definite plan, aim, or pattern 任意地;随便地choose/select/pick something at random The gang picked their victims at random. 这帮犯罪分子随意选择对象下手。
at random• While he waited, he picked up a magazine, turned to a page at random, and started reading.• We selected the agencies at random from the phone book.• The forms were distributed at random to people passing by.• Twenty students were chosen at random to take part in the experiment.
→ at random at random(1)