doctor ['dɑktɚ] 词频1 词根: doc

n. 医生，大夫;博士;神学家;医疗设备; vt.& vi. 医疗，行医; vt. 修理，装配;假造;搀杂;修改，修饰;

💡 doct教+or表名词，人→教的人→有学问的人→ 博士，医生

"She made an appointment for her son to see the doctor."

近义：spay, load, adulterate, healer, m.d., medic

disease [dɪ'ziz] 词频1 词根: dis

n. 疾病;弊端;不安; vt. 传染;使…有病;

💡 dis(apart)+ease→疾病

"About 40% of the country's population is afflicted with the disease."

近义：ill, malady, illness, complaint, condition, affliction 反义：healthiness, liveness, salubrity, salutariness, sanitation, sparkle

often ['ɔf(tə)n] 词频1

adv. 常常;经常;时常;再三;

💡 十(ten)有八九的(of)， 经常的

"Sleep has often been thought of as being in some way analogous to death."

近义：manyfold, oft, oftentimes, repeatedly, usually, offtimes 反义：infrequently, occasionally, seldom, sometimes

feared

v. 畏惧( fear的过去式和过去分词 ); 为…忧虑（或担心、焦虑）; 敬畏（神等）; 感到害怕