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

study ['stʌdi] 词频1

n. 学习，研究;课题;书房;结论; vi. 考虑;沉思;默想;努力; vt. 想出;详细地检查;背诵（台词等）;为…费心思;

"The figures for 2001 were used as a baseline for the study."

近义：investigate, assay, peruse, probe, research, resolve

morning ['mɔrnɪŋ] 词频1

n. 早晨;上午;黎明;早期，初期;

💡 摸领（谐音): 早晨起来摸一摸一衣领 早晨山(m)上或许(or)很宁(ning)静

"It was bedlam at our house on the morning of the wedding."

近义：awakening, sunrise, dawn, daybreak, forenoon, matinal 反义：nighttime, nite, evening, night, nightly, nocturnal