英文關鍵字
beaker
bottle
chemical
chemistry
closeup
container
cup
development
equipment
experiment
eyedropper
flask
food
glass
healthy
hygiene
industry
ingredients
ink
laboratorian
laboratory
liquid
machine
male
man
measure
measurement
measuring
milliliter
mixing
physics
production
products
research
science
separation
soap
transparent
whirlpool
white