n (1) (藥的一次)用量，一劑(服)(amount of medicine prescribed to be taken at one time) [C]：have a～of medicine/cough-mixture/cod-liver oil 服一劑藥/咳嗽藥水/魚肝油;The bottle contains six～s. 這瓶子容量為六劑。give/administer the correct～給予準(zhǔn)確的劑量;in small～s 小劑量地;
(2) (放射能的一次)接受量(amount of radiation received at a single time)[C]：a lethal～of radiation 輻射致死量;receive a heavy～of radiation 受到超量輻射感染;
(3) 一次經(jīng)歷(尤指令人不快的遭遇)(amount of sth， esp unpleasant that has to be taken or borne) [C]：have/suffer from a nasty～of flu 得了/正患一次很難受的感冒;a～of hard work 一份苦差事;a～of boring conversation/bad weather 一次煩人的談話/壞天氣;have a full～of sb's temper 忍受某人大發(fā)脾氣;can only stand sb in small～s 只能稍微容忍一下某人;Failing the exam was a hard～to swallow. 考試不及格是一付難咽的苦藥。What he needs is a good～of laughter. 他需要的是開(kāi)懷大笑。
(4) 性病(case of gonorrhea or syphilis) [C](sl)：catch/give sb a～(自己)染上/使(某人)傳上性病;
vt 給……一劑(藥)(give a dose of medicine to)[T+n， T+n+prep(with)]：～oneself(sb) with medicine/cough-mixture 喝(讓某人喝)藥/咳嗽藥水;heavily～d with pain-killing drugs 給開(kāi)了大量止痛藥;
→′dosage n 一服(劑)藥的量