foul water drain 中文意思是什麼
foul water drain
解釋
污水渠;臟水渠-
Pour water into drain outlets regularly to prevent foul air and insects in the sewage pipe from entering the premises
定期注水進排水口內,以防昆蟲及臭氣經排水口進入室內。 -
Pour about half a litre of water into each floor drain outlet at least once a week in order to prevent foul air and insects from entering the premises
最少每星期一次把約半公升清水倒進每個地臺排水口,以防止臭氣和昆蟲進入樓宇內;
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