lifetime ['laɪftaɪm] 词频3

n. 一生，寿命;有生之年;存在期，有效期; na. 终生;终身保障;[核]寿命;

💡 life生命+time时间→ n.一生，终身

"His diary was not published during his lifetime."

近义：time, age, epoch, era, generation, lifelong

spent [[spent]] 词频1

a. 用尽的, 精疲力竭的\\nspend的过去式和过去分词

近义：outworn, unavailable, consumed, depleted, exhausted

active ['æktiv] 词频1 词根: 行动

adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的; n. [语法]主动语态;积极分子，活跃的人;

💡 act(做)+ive(形缀)=active 活动的 积极的 pass(传递)+ive(形缀)=passive 被动的

"Although he's nearly 80, he is still very active."

近义：keen, astir, operative, powerful, spirited, sprightly 反义：out, antipathetic, antithetic, antithetical, negative, contrarious

deep [dip] 词频1 词根: /di:/

adj. 深的;深远的，深奥;重大的，深刻的;强烈的，痛切的，深厚的; n. 深处，深渊; adv. 深深地，深入地;

💡 地铺(谐音):地铺很 深 网友：马胜敏 补充：说明:如果把deep的p按照逆时针方向翻转180度就会变成deed(行为,事情) 如果把deep的d垂直翻转180

"Sam was born in the country and had a deep affinity with nature."

近义：abysmally, profoundly, deeply, abysmal, profound, chasmal 反义：shoal, superficial, simple, uncomplicated, basic, cushy

world [wɝld] 词频1

n. 世界;地球;领域;尘世;

💡 一句（l）话（word）讲出 世界的本质

"In a world that had suddenly become alien and dangerous, he was her only security."

近义：humanity, civilisation, civilization, orb, earth, globe