Sewage is the dirty mix that leaves our homes through pipes under the ground: waste from the human body, plus the used water from sinks, baths, and showers. It is the stuff itself, not the pipes.

Sewage污水 is the dirty mix that leaves our homes through pipes under the ground是透過地下管線離開我們家裡的那攤髒東西：waste from the human body包括人體排出的廢物，plus the used water from sinks, baths, and showers加上水槽、浴缸和淋浴用過的水。It它 is the stuff itself指的是那東西本身，not the pipes不是那些管子。

Cities hide it, but every town has to move it away and then clean it, or rivers and streets get sick.

Cities城市 hide it會把它藏起來，but every town但每個城鎮 has to move it away and then clean it都得把它運走再處理乾淨，or rivers and streets get sick不然河流和街道就會出問題。

The word is ordinary and a little ugly; you hear it in news about leaks, smells, and water safety. Some people say “waste water” to sound milder.

The word這個字 is ordinary and a little ugly普通又有點不雅；you你 hear it會在...聽到它 in news about leaks, smells, and water safety關於漏水、臭味和用水安全的新聞裡。Some people有些人 say "waste water"會說「waste water」 to sound milder聽起來比較不那麼刺耳。

Though actually, not all used water is sewage — rain that runs off a road is a different stream, even if it may meet sewage later in the same pipes. Don’t use sewage for the network of pipes; that system is sewerage (or, in everyday talk, just “the sewers”).

Though actually不過其實，not all used water並不是所有用過的水 is sewage都算sewage——rain that runs off a road路面流下的雨水 is a different stream是不同的一股水，even if it就算 may meet sewage later in the same pipes後來可能在同樣的管線裡跟污水匯在一起。Don't use sewage不要把sewage用 for the network of pipes來指整個管線系統；that system那個系統 is sewerage叫做sewerage（or, in everyday talk或口語就直接說, just "the sewers"「下水道」）。