英文關鍵字
ancient
animal
animalcule
antique
aquatic
art
artwork
biology
black
campanula
cell
cilia
ciliate
drawing
education
educational
engraved
engraving
etching
eukaryotic
freshwater
history
illustration
infusoria
invisible
laboratory
life
meyers
micro
microbiology
microorganism
microscope
microscopic
nature
old
organism
picture
pond
protist
protista
protozoa
protozoan
science
species
tiny
vintage
vorticella
water
white
zoology