analyzing
ash
audience
biochemistry
biology
blue
burning
calcium
chemic
chemical
chemistry
children
class
classroom
closeup
crown
cup
dry
education
equipment
experiment
fire
flame
gluconate
hand
heat
laboratory
lighter
material
measuring
medical
medicine
metal
mug
pills
public
research
sample
school
science
scientific
scientist
solution
spirit
stand
substance
tablet
technology
test
tube
定額
Chemical experiment with calcium gluconate in laboratoryの素材 [FY31076839096]
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![Blue green industrial sewage pipe on endge of building or structure with rivets and screws and small grass near sidewalk. In city or in urban area in late afternoon shade for plumbing and water.の素材 [FY310199486334]](https://images.assetsdelivery.com/compings_v2/aaronanthonyfinn/aaronanthonyfinn2303/aaronanthonyfinn230300065.jpg "Blue green industrial sewage pipe on endge of building or structure with rivets and screws and small grass near sidewalk. In city or in urban area in late afternoon shade for plumbing and water.の素材 [FY310199486334]")