reagent

n. 试剂（导致化学反应）

readership, readily, readily, readiness, readiness, reading, reading age, reading-desk, reading-glasses, reading-lamp (also `reading-light), reading-room, readjust, readjustment, ready, ready money (also ready cash), ready reckoner, ready-made, reaffirm, reaffirmation, reafforest, reafforestation, real, real ale, real estate, real number, real tennis (also royal tennis), real time, realign, realignment, realise, realism, realist, realistic, realistically, reality, realizable, realisable, realization, realization, realisation, realize, realize, realise, really,