It his been calculated that the German High Command in the West can dispose of about 1,750 fighter air-craft, about half of which are single and half twin-engined machines.

据估计，德国西线最高统帅部可以调动的战机约1750架，单引擎机和双引擎机各占一半。

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It his been calculated that the German High Command in the West can dispose of about 1, 750 fighter air-craft, about half of which are single and half twin-engined machines.

据估计，德国西线最高统帅部可以调动的战机约1750架，单引擎机和双引擎机各占一半。

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Twin B smoked half a pack a day for 14 years, while her sister never

双胞胎之一B，每天吸半包烟达14年之久。 她的姐姐A从未吸烟。

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Patients who receive a bone marrow transplant from an identical twin relapse half the time, perhaps because the twins share nearly identical immune systems.

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You know, fly a big twin-engine, 600hp Beech Baron that eats avgas by the half ton and burps carbon dioxide like a sumo wrestler on yeast pills.

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Sixty percent of myeloma patients die within five years, but Giusti beat the odds, living for a decade and a half through multiple rounds of drug therapy and a bone marrow transplant from her twin sister.

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