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免費 H5n1 視頻 - 頁面 2

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白人研究員女士在綠色田野中進行害蟲控制時,戴著防護服拿著試管
asian women with posters during protest in city
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animation of a virus sign with words total confirmed and changing numbers and macro covid-19 cells
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animation of a health hazard sign over coronavirus cells floating in a liquid 4k
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animation of words covid-19 floating over three scientists working in a laboratory
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白人研究員穿著防護服的男子,在綠色田野中進行害蟲控制時,握著試管
hazard sign with total confirmed number rising against rosary spinning
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anonymous farmer spraying pesticide on lemon trees while riding tractor
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白人研究人员穿着白色防护服和防护眼镜在绿地进行害虫控制
scientist is experimenting in chemical laboratory with dangerous reagents dropping liquid by pipet in plate development of new drug or vaccine
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研究員身穿防護服,戴防護眼鏡的女性在綠色田野敲打玻璃
穿著個人防護裝備的清潔人員在辦公大樓內清潔窗戶玻璃的正面圖
video of two technicians in clean suit in a hurry
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白人研究人员穿着防护服,手持试管,在绿地进行害虫控制时使用笔记本电脑
一名病人躺在床上透過氧氣面具呼吸
animation of red hazard sign with total confirmed number rising over cityscape
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group of doctors in protective uniforms posing for camera
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doctors in protective wear walking in hospital and speaking
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virologist is researching danger virus in laboratory man is dressed protective overall and face mask with respirator developing of bacteriological weapon
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close-up of samples of female gynecological fluid for cancer analysis, automated studies
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black lab scientist in protective suit doing chemical experiment
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portrait of female doctor in protective uniform at work
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animation of biohazard symbol total confirmed numbers and covid cells over doctor with syringe
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白人研究員穿著白色防護服和防護眼鏡的男子在綠色田野中行走,同時進行害蟲控制
病人透過氧氣面具呼吸的近距離拍攝 2
紅頭髮的女人戴着面具,對著攝影機放大鏡頭,在街上微笑
close up view of african american doctor in protective glasses
a man in a hazmat suit holding a quarantine sign
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portrait of casual brunette young woman with protective medical face mask
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白人研究人员穿着白色防护服和防护眼镜在绿地进行害虫控制
microbiologist is exploring dangerous bacteria by microscope in laboratory protecting himself by overall and mask with respirator closeup of human face
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不要將我們的世界放火抗議標誌
medical health worker portrait wearing full face piece respiratory protection mask and disposable protective suit against sars covid-19 safety measures - profile shot
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兩個穿著個人防護裝置的清潔人員從辦公室大樓內的玻璃電梯中走出來
portrait of male doctor in protective uniform in clinic
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scientist team in protective suit preparing tools for analysing virus development
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composite of happy mixed race male friends in face masks reading map, and sunlight on trees
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asian women with posters during protest in city
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animation of a health hazard sign over coronavirus cells floating in a liquid 4k
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portrait physician protective suit posing in hospital infectious department.
portrait of male hospital worker in protective uniform
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portrait of tired doctor in dental office looking on camera
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young family in protective suits holds rollers near wall
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male scientist is working with dangerous and toxic chemicals in chemical laboratory using protective dress mask and gloves researching by microscope
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病人躺在床上,透過氧氣面具呼吸 1
靠近一個病人透過氧氣面具呼吸,看著攝影機
paramedic in medical mask looking at camera in emergency car
一名戴著防毒面具的非洲裔美國人大喊大叫, 舉起雙手, 拿著"禁止種族歧視"的標誌,
一名戴着防毒面具的非洲裔美国男子拿着反对种族主义的海报,与其他人在街上示威
dental specialists analyzing tablet screen and writing on glass
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