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免費 生物愛好者 視頻 - 頁面 2

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animation of question marks over diverse female and male lab workers with samples
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face mask, scientist or woman with plant research
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animation of mathematical equations over caucasian scientists vaccinating tomato
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研究人员的后视,手套上的女人在绿色的田野里敲打玻璃
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
two scientists working in a laboratory
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animation of molecules over caucasian scientists doing experiments
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用新技術培養組織
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自然世界 3 字
戴眼鏡的年輕女子的肖像,她的子和手圍著一條白色寵物蛇,手在綠色背景上2
team of health worker wearing protective clothes cleaning office using disinfectant sprayer
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animation of molecular structures floating over team of scientists working together at laboratory
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scientists growing microgreens in a lab
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白人研究人员穿着白色防护服和防护眼镜在绿色田野里行走,
studying a leaf filled with microscopic organisms 4k
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白人研究員在綠色田野中進行害蟲控制時,身穿防護服的男子拿著試管
白人研究人员穿着防护服和防护眼镜的人在绿色的田野里敲打玻璃
护士和女医生拿着covid-19疫苗的注射器的肖像
covid, computer and test tube with a man scientist
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白衣,面具和谷歌的白人研究人员在绿色的田野里看着相机
scientists examining microgreens in a laboratory setting
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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
科学家在实验室中对植物进行研究 3
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研究人员的近距离视图 男人手拿着试管在绿色田野中进行害虫控制
一位非洲裔美国妇女和阿拉伯同事在森林中观察树叶
白人研究員,戴著白色帽子,面具和護眼鏡的女性,使用平板電腦,在綠色田野中周圍看
the answer lies behind the lens
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closeup of laboratory scientist using dropper
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petri dish, leaves and sample with scientist women
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animation of dna strand and shapes over caucasian woman with megaphone and mathematical equations
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一群多民族的生态活动家在休息时吃饭和聊天,坐在森林里的树干上
戴著防護套裝和眼鏡的科學家在實驗室工作,用植物樣本
animation shows scientist with covid-19 icons, highlighting pandemic.
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白人研究人员穿着防护服和防护眼镜的人在绿色田野中行走,
一個男科學家拿著一個植物的瓶子
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female scientists holding pot plant
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stunning footage of drug cannabis marijuana under microscope trichomes thc cbd
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covid, test tube and botany sample
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科学家在实验室中对植物进行研究 2
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putting their botany skills to work
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animation of chemical molecules over caucasian male scientist taking sample in lab
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白人研究人员穿着白色防护服和防护眼镜在绿色田野里行走,
在背景上拍摄绿色三叶草形状的近距离工作室拍摄,以庆祝圣帕特里克日
植物的克隆 植物的複製
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animation of computer language over caucasian researcher discussing about chemical formulas
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animation of spreading coronavirus covid19 with healthcare workers in background
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abstract 3d geometric background with metallic spheres
animation of three scientists using a pipette over people on a street.
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multiethnic friends in university campus.
scientists conducting plant experiments in a laboratory
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