英文關鍵字
bacteria
bath
bathroom
blocked
business
clean
cleaner
cleans
clog
clogged
cork
design
drain
drainage
emergency
faucet
food
garbage
germs
hair
hand
holding
home
house
household
housework
hydraulic
hygiene
kitchen
man
pattern
people
pipe
plumber
plumbing
plunger
purification
repair
service
sewage
sewer
sink
siphon
tap
technology
tool
trap
tube
under
vintage
wash
water