1. 不分清红皂白：不费吹灰之力 as easy as blowing off dust | 不分清红皂白 indiscriminately | 不敢越雷池一步 dare not go one step beyond the prescribed limit

2. 不分青红皂白：coughing 咳嗽 | livery 涂装 | indiscriminately 不分青红皂白

3. 不加选择地：delicate 精密的 | indiscriminately 不加选择地 | lubrication 润滑

4. 不分青红皂白/无差别：indiscriminate /无差别的/不分皂白的/杂陈的/ | indiscriminately /不分青红皂白/无差别/ | indiscrimination /无差别/无分别/

adv

1. in a random manner

    e.g. the houses were randomly scattered
           bullets were fired into the crowd at random

    Synonym: randomlyhaphazardlywilly-nillyarbitrarilyat randomevery which way

2. in an indiscriminate manner

    e.g. she reads promiscuously

    Synonym: promiscuously