market ['mɑrkɪt] 词频1 词根: 贸易

n. 交易;市集;需求;交易情况，行情; vt. 在市场上出售某物;推销; vi. <美>去市场买东西;

💡 mark(merc-=trade)+et(名词后缀)→市场；市集；交易；出售

"to buy or sell goods on the black market"

近义：introduce, launch, merchandise, merchandize, release, commercialise 反义：obtain, procure, purchase, secure, acquire, get

afternoon [,æftɚ'nun] 词频1

n. 下午;后期，后部;

💡 after之后+noon中午 → 午后，下午

"in the late afternoon"

近义：evening, p.m., postmeridian 反义：awakening, sunrise, dawn, daybreak, forenoon, matinal

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