英语六级词汇备考-高频单词及例句（41）
<p> 401, <span word="opaque">opaque</span> <span word="a">a</span>.不透明的;不传导的</p><p> <span word="The">The</span> <span word="once">once</span> <span word="clear">clear</span> <span word="mountain">mountain</span> <span word="stream">stream</span> <span word="is">is</span> <span word="now">now</span> <span word="polluted">polluted</span> <span word="and">and</span> <span word="opaque">opaque</span>.</p><p> 曾经是很清澈的山溪, 现在受到污染变得混浊了。</p><p> 难理解的, 晦涩的</p><p> <span word="The">The</span> <span word="report">report</span> <span word="was">was</span> <span word="written">written</span> <span word="in">in</span> <span word="long">long</span>, <span word="opaque">opaque</span> <span word="sentences">sentences</span>.</p><p> 报告中的句子又长又难懂。</p><p> 402, <span word="oppress">oppress</span> <span word="vt">vt</span>.压迫,压制;压抑</p><p> <span word="vt">vt</span>. 使烦恼</p><p> <span word="Many">Many</span> <span word="troubles">troubles</span> <span word="oppressed">oppressed</span> <span word="my">my</span> <span word="father">father</span>.</p><p> 种种困难使我父亲意志消沉。</p><p> 压迫, 压制</p><p> <span word="She">She</span> <span word="is">is</span> <span word="often">often</span> <span word="oppressed">oppressed</span> <span word="by">by</span> <span word="him">him</span>. 她经常受他的压迫。</p><p> 403, <span word="optimism">optimism</span> <span word="n">n</span>.乐观,乐观主义</p><p> <span word="Optimism">Optimism</span> <span word="made">made</span> <span word="him">him</span> <span word="alive">alive</span> <span word="through">through</span> <span word="the">the</span> <span word="hard">hard</span> <span word="days">days</span>.</p><p> 乐观主义使他在艰难的岁月里活了下来。</p><p> 404, <span word="optimum">optimum</span> <span word="n">n</span>.最适条件,最适度</p><p> <span word="adj">adj</span>. 最适宜的; 最有利的</p><p> <span word="Do">Do</span> <span word="you">you</span> <span word="know">know</span> <span word="the">the</span> <span word="optimum">optimum</span> <span word="temperature">temperature</span> <span word="for">for</span> <span word="the">the</span> <span word="growth">growth</span> <span word="of">of</span> <span word="plants">plants</span>? 你知道庄稼生长的最佳温度吗?</p><p> 405, <span word="option">option</span> <span word="n">n</span>.选择,取舍</p><p> <span word="You">You</span> <span word="will">will</span> <span word="have">have</span> <span word="to">to</span> <span word="pay">pay</span> <span word="them">them</span>; <span word="you">you</span> <span word="have">have</span> <span word="no">no</span> <span word="option">option</span>.</p><p> 你必须付给他们钱, 别无选择。</p><p> 可选择的办法</p><p> <span word="The">The</span> <span word="government">government</span> <span word="has">has</span> <span word="two">two</span> <span word="options">options</span>; <span word="to">to</span> <span word="reduce">reduce</span> <span word="spending">spending</span> <span word="or">or</span> <span word="to">to</span> <span word="increase">increase</span> <span word="taxes">taxes</span>. 政府有两种选择的办法:或是减少开支, 或是增加税收。</p>
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