But even filters of this type, if they are to be fully relied upon, must be frequently cleaned and sterilized, and great care must be taken that the joints and connexions are watertight, and that the candles are without cracks or flaws.
The puddle was then replaced, and remains sensibly watertight.
You cannot expect lobbyists to keep their different roles in watertight compartments.
So they should get the ticket wording watertight so no motorist can get away without paying them.
The husband is decidedly odd and his absence at the time of the crime doesn't give him a watertight alibi by any means.