雅思写作常用词汇：成本高效益
<p> <span word="cost">cost</span>-<span word="effectiveness">effectiveness</span></p><p> -<span word="eg">eg</span>: <span word="The">The</span> <span word="cost">cost</span>-<span word="effectiveness">effectiveness</span> <span word="of">of</span> <span word="treating">treating</span> <span word="a">a</span> <span word="condition">condition</span> <span word="in">in</span> <span word="the">the</span> <span word="early">early</span> <span word="stage">stage</span>, <span word="rather">rather</span> <span word="than">than</span> <span word="delaying">delaying</span> <span word="until">until</span> <span word="more">more</span> <span word="expensive">expensive</span> <span word="and">and</span> <span word="prolonged">prolonged</span> <span word="treatment">treatment</span> <span word="is">is</span> <span word="necessary">necessary</span>.;</p><p> <span word="budget">budget</span></p><p> -<span word="eg">eg</span>: <span word="She">She</span> <span word="tried">tried</span> <span word="to">to</span> <span word="keep">keep</span> <span word="her">her</span> <span word="monthly">monthly</span> <span word="budget">budget</span> <span word="below">below</span> $400.</p><p> </p>
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