But the same radiation that kills cancer cells can also destroy healthy ones, causing side effects such as nausea and vomiting, skin sores and rashes, and weakness and fatigue.

但是放疗在杀死癌细胞的同时也会破坏正常的细胞，导致很多副作用，比如恶心，呕吐，皮肤痛和皮疹，还有虚弱和疲倦。

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If you look at lower-middle income countries, such as China, or upper-middle income ones, like Argentina, you find that what kills people there is the same as in the West (see chart 2). Four-fifths.

看看中低收入国家(如中国)和中高收入国家(如阿根廷)的统计数据，你会发现这些国家和西方国家一样，导致人们死亡的原因是相同的(见表2)。

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In others, such as that of the Rheinmaiden Lorelei, the siren is heartbroken and kills for revenge.

在其他传说中，比如罗蕾莱海妖，它因悲痛而杀人报复。

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First, in the face of a disease such as malaria, which kills up to 2.7m people a year, speed is itself a virtue, for which some sacrifice in quality may be worthwhile.

ECONOMIST: Economics focus