Whileintegrasedeletesanimmunecell'sgeneticmaterialandreplacesitwithitsown,itactslikeinawordprocessor.
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a cut and paste operation
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Theareagets(年降雨量不足五厘米).
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fewer than five centimeters of rain a year
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Theonlysoundsarebirdcallsandthesoftnoise(当水缓缓推动草时草所发出的)
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made by grasses as the water slowly moves them
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Thevisitorsplannedto(花最少的时间游览公园以外的地方).
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spend minimum time sightseeing outside the parks
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Ifthedrugproveseffectiveinhumantrials,itcouldenhancetheeffectivenessofexistingAIDSdrugsin.
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fighting drug-resistant strains of the virus
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AccordingtoStevenYoung,ifscientistsgetthedatathat,theywouldpetitionforfasttrackstatus.
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Because the virus changes its shape.
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Lifeistooshort(不可每天将时间浪费在看电视上).
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to idle away the hours watching TV each day
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Hetoldthestoryinsuchminutedetail(简直就像他亲眼看见一样).
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that he might himself have been an eye-witness
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