doubt [daʊt] 词频1 词根: dou

n. 怀疑，疑虑;未确定; vt. 怀疑，疑惑; vi. 不确定，不能肯定或怀疑;

💡 doubt二→二种状态→怀疑

"a feeling of doubt and uncertainty"

近义：disbelieve, hesitation, hesitate, mistrust, question, stagger 反义：prove, reassure, verify, vouch, check, demonstrate

yourself [jɔr'sɛlf] 词频1

pron. 你自己;（用以加强语气）亲自;你的正常或健康的情况;

💡 your你的+self自己 → 你自己

"De-stress yourself with a relaxing bath."

近义：herself, himself, itself, oneself, themselves, thyself

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