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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TB can treated with antibiotics but is sometimes fatal.

要治疗肺结核，可以用抗生素，但是，有时候却是可以致命的。

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Isoniazid may cause severe and sometimes fatal liver damage.

异烟肼可导致严重的，有时是致命的肝损害。

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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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