全部 » Lifestyle » Man » 科学家在实验室调整设备 Scientist adjusting equipment in a laboratory
科学家穿着长袍,戴着眼镜和手套,在实验室里有更多的人员和装有物质的容器,调整设备。
Scientist in gown, glasses and gloves in a laboratory with more personnel and containers with substances, adjusting the equipment.