The BSF kills with such impunity along India’s 4, 100-kilometre (2, 550-mile) border with Bangladesh that one local journalist wonders what the story is about.

印度边境安全部队在沿印度与孟加拉国4100公里（2550英里）的边境线上如此不受惩罚的滥杀无辜，一个当地记者想知道事情的真相到底如何。

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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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The silver, which presents no health risks in such miniscule amounts, kills off 99.89 percent of the microbes that live in the water.

这种微量的银对人体没有健康风险，却能杀灭水中的99.89%的细菌和微生物。

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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