Researchers discover that the swine flu virus binds far deeper in the lungs than ordinary flu, possibly explaining why it is sometimes fatal.

研究者发现，猪流感病毒比普通流感在肺更深部结合，这可以解释为什么它有时是致命的原因。

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Chronic open wounds-also known as "bedsores" or "pressure ulcers" -are a painful and sometimes fatal condition afflicting about 5 million Americans.

慢性开放性伤口(也叫“褥疮”或“压力溃疡”)是一种很痛苦，有时是致命性的疾病，困绕着大约500万美国人。

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Salmonella can cause serious and sometimes fatal infections particularly in young children, frail or elderly people, and those with weakened immune systems.

圣保罗沙门氏菌可以引发严重的、有时甚至是致命的感染，而幼童、老人、体弱者，以及免疫系统较差的人士必须格外小心。

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The authorities respond with tear gas and,sometimes,fatal gunfire.

VOA: standard.2009.04.08

Large institutions like pension funds, banks, endowments, and insurance companies suffered punishing and sometimes fatal losses.

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Chemotherapy is prescribed with no guarantee of effectiveness and can cause wretched, and sometimes fatal, side effects.

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Salmonella can cause serious and sometimes fatal infections in young children, frail or elderly people, and others with weakened immune systems.

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