quantum

n (pl quanta / -tE;-tE/) (fml 文) amount that is required or desired （需要的或想要的）数量.

quaintly, quaintness, quake, Quaker, qualification, qualified, qualifier, qualify, qualitative, qualitatively, quality, qualm, quandary, quango, quantifiable, quantification, quantify, quantitative, quantity, quantity surveyor, quantum leap, quantum theory, quarantine, quark, quarrel, quarrel with, quarrel with (sb.), quarrelsome, quarry, quart, quarter, quarter sessions, quarter-day, quarter-final, quarter-light, quarter-note, quarterdeck, quarterly, quartermaster, Quartermaster-General,