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免費 國家病毒學實驗室 視頻

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animation of covid-19 cells against team of workers wearing protective clothes disinfecting office
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doctor in ppe suit working at pc while chemist using microscope
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portrait of lab technician holding tube of blood sample
chemist woman in ppe suit typing on pc checking virus development
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科学家在实验室中记录结果
orthodontists in ppe suits making diagram with sticky notes
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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
chemists in coverall trying to develop vaccine using tablet standing behind the glass wall
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pharmaceutical technology process
chemist in ppe suit working at pc while lab technician bringing her blood samples
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chemist scientist looking microscope slide
covid-19 cells and human face model against health worker cleaning office desk with disinfectant
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白人女性醫生戴著醫療面具坐在辦公室向男性病人解釋冠狀病毒肺病
covid, happy and scientists with a high five
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team of health worker wearing protective clothes cleaning office using disinfectant sprayer
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一名不明身份的黑客在深夜在笔记本电脑上打字并偷窃网络数据库数据
portrait of female paramedic in mask posing at camera
白人研究員穿著防護服,拿著試管,在綠地進行害蟲控制時使用筆記型電腦
female scientist looking through microscope in laboratory
dentistry team of specialists using sticky notes on glass
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coronavirus analysis over scientists in lab.
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dental specialists analyzing tablet screen and writing on glass
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animation of scientific data processing over diverse scientists in laboratory
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scientists in coverall standing behind the glass wall working in danger area of lab
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辦公大樓內一個穿著個人防護裝置的清潔工在清潔窗戶玻璃的正面圖 1
chemical research experiment
兩個穿著個人防護裝置的清潔人員在辦公室內清潔窗戶玻璃的外觀
team of scientists in coverall discussing about virus development
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animation of words covid-19 floating over three scientists working in a laboratory
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biochemist in coverall checking manifestations of virus
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multiple covid-19 cells floating over group of health workers cleaning the office using disinfectant
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animation of covid-19 cells against team of workers wearing protective clothes disinfecting office
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戴着面具的多民族医生团队在医院办公室观察数字显示屏时讨论covid肺病
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
close up of dentistry doctors talking wearing hazmat suit
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chemist with coverall looking at virus test in equipped lab
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scientist using a scanning electron microscope (sem)
scientist nurse in ppe suit taking notes on computer looking at test tube
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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
兩個穿著個人防護裝置的清潔人員在辦公大樓內觀看攝影機
chemist researcher in coverall looking at bacteria sample from glass
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stomatology team of dentists at desk using computer for teethcare in dental cabinet
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兩個穿著個人防護裝置的清潔人員在辦公大樓內清潔水晶牆壁的後景
covid, research and medical scientist working
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multiple covid-19 cells floating over group of health workers cleaning the office using disinfectant
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scientist team in laboratory
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scientist in ppe suit holding petri dish while studying virus samples
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scientist hand writing on test beakers
multiple covid-19 cells floating over group of health workers cleaning the gym using disinfectant
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covid scientists discovering a disease cure
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