英文關鍵字
3d
acid
alpha
amino
aminoacid
animation
aromatic
atom
atomic
background
bio
biochemistry
biological
biology
biomolecule
black
bond
branched
chain
chemical
chemistry
compound
element
essential
formula
icon
ion
isolated
isometric
lab
laboratory
metabolic
metabolism
model
molecular
molecule
motion
nutrition
organic
peptide
physiology
protein
science
simple
structural
structure
substance
system
tryptophan
tryptophane
white