Please specify who they are and what harbor you are talking about.
by keeping it clean
Keeping the work bench clear and clean Keeping the floor clear and clean When a job is finished, putting the tools away clean
Plants and trees have a major role in keeping the environment clean. This is because they help to clean the air using photosynthesis.
clean grill
boil it
the state of being clean, or the act of keeping things clean
no one can deny that keeping our environment clean is a must.
water
A pillowcase.
you can recover gold by keeping it clean!
It means keeping the environment clean and green and if we do we'll have a better future
It depends on what you mean by clean. If it is a health hazard they can get in trouble.