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Pamela
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信封写法：
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c/o 是care of的缩写，表示“由……转交”。
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张道真英语用法（大众珍藏版·第二版） [:1704917568]
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555 level—grade—standard
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level的基本意思是“水平（面）”：
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Because of the heavy rain the level of the lake has risen 6 inches．由于大雨湖面上涨了6英寸。
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The town is 2,000 feet above sea level．这座城市海拔2000英尺。
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可以引申表示“水平”、“层”、“级”：
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The general level of the class is high．这个班总的水平是高的。
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This will help to raise our technical level．这会帮助提高我们的技术水平。
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The talks took place at a high level．谈判在高层进行。
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This problem is being considered at ministerial level．这个问题正在部长级考虑。
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Women must have a voice at all levels in the union．妇女在各级工会都应有发言权。
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“等”、“级”也可由grade表示：
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Only the highest grade of goods is sold here．这里只出售最高级的商品。
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These are second grade apples．这是第二等的苹果。
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Radio forecasts said a sixth-grade wind was on the way．无线电预报说将有6级大风。
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grade在美式英语中还可表示“年级”和“分数”：
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An elementary school in America has eight grades．美国的小学有8个年级。
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The play was presented by the third grade．这个剧由3年级演出。
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The boy got a grade B in the spelling test．在拼写测验中这个男孩儿得B。
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