一个主要问题是,世界各国政府为了维持国家卫生系统正在承担巨大成本。

One of the principal problems is that governments all around the world are incurring great costs in order to maintain a national health system.

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One of the principal problems is that governments all around the world are incurring great costs in order to maintain a national health system.

incurring 是动词 incur 的现在分词形式。incur 由前缀 in-(表示"进入")和词根 cur(来自拉丁语 currere,意为"跑")组成,字面意思是"跑入",引申为"招致、承担(费用或责任)"。incurring 在这里表示"正在承担"的意思。

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