英文關鍵字
urinary
system
line
symbol
outline
kidneys
stones
cancer
bloody
urine
frequent
urination
linear
contour
background
lined
health
part
human
body
anatomy
treatment
medicine
medication
disease
diagnosis
symptom
organ
inflammation
pain
healthy
anatomical
medical
healthcare
bacterial
illness
monochrome
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black