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kinetic adj. 运动的;动力学的 词根记忆：kine+tic运动的 know-how n. 专业技能，知识 分拆联想：know+how知道如何做专业技能 The technical know-how, if not the political commitment, appears already at hand to feed the worlds exploding population and so to eradicate at last the ancient scourges of malnutrition and famine. laborious adj. 费力的，艰难的 lackadaisical adj. 无精打采的;无兴趣的 分拆联想：lack+a+daisi+cal缺少第一流人物让人无精打采 laconic adj. 简洁的 来自古希腊王国Laconia，以说话简洁而闻名 concise, brief, curt, succinct, terse laggard adj. 缓慢的;落后的;n. 落后者 lag+gard落后的 lament vt. 悲伤;哀悼 languid adj. 没精打采的，倦怠的 largesse n. 慷慨 词根记忆：large+sse大方 Famous among job seekers for its largesse , the company, quite apart from generous salaries, bestowed on its executives annual bonuses and such perquisites as low-interest home mortgages and company cars. | 
