______(努力降低肺癌的死亡率) the National Cancer Institute sponsored three separate lung cancer screening trials last year.

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问题 ______(努力降低肺癌的死亡率) the National Cancer Institute sponsored three separate lung cancer screening trials last year.

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答案In an attempt to reduce the death rate from lung cancer

解析 分析句子结构可知,所译部分为目的状语,故可用介词短语的形式表达。“努力……”用in an attempt to表达:“降低”用reduce表达;“肺癌的死亡率”用the death rate from lung cancer表达。
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