Picking one door at random out of several, I walked into a broom cupboard.

我随意打开几扇门中的一扇，想走进去找自己要吃的东西，但里面却是一个放扫帚的储物柜。

youdao

65he might as well have picked a family at random out of the telephone book and stayed with them.

他也许也是从电话簿上随意挑了个家庭并且跟他们住在了一起。

youdao

They went in singing radically different "tunes" -random sequences of six notes at a time-and came out crooning an oddly haunting duet consisting of about 20 sounds.

他们唱着完全不同的“旋律”——一次6个音符的随机序列——结果竟然会哼唱一首含有20种声音、怪得令人难以忘怀的二重唱。

youdao

If people in this population meet and breed at random, it turns out that you only need to go back an average of 20 generations before you find an individual who is a common ancestor of everyone in the population.

BBC: Family trees: Tracing the world's ancestor

But there is plenty of random chaos, leading to a nuclear-envelope scene at the Academy Awards, and the parodies keep on springing out of nowhere.

NEWYORKER: Naked Gun 33 1/3