random

a.无目的的

ramify, ramp, rampage, rampant, rampantly, rampart, ramrod, ramshackle, ran, ranch, rancher, rancid, rancidness, rancor, rancorous, rancorously, rancour (US rancor), rand, randily, randiness, random access (also direct access), random signal, randomize, randomly, randomness, randy, ranee (also rani), rang, range, range-finder, ranger, rani, rank, ranking officer, rankle, rankly, rankness, ransack, ransom, rant,