Sewerage is the system: the sewers, the pumps, and the works that treat the waste so it is less harmful before it goes back to a river or the sea. If sewage is the dirty water, sewerage is the network that takes it away and deals with it.

Sewerage這個字 is the system指的是整套系統 : the sewers, the pumps, and the works that treat the waste：下水道、抽水站，還有處理污水的設施 so it is less harmful before it goes back to a river or the sea讓污水在流回河川或大海之前變得比較沒有害。 If sewage is the dirty water如果說sewage是那些髒水， sewerage is the network that takes it away and deals with itsewerage就是把它帶走、處理掉的那整套網絡。

This is a more technical word. City planners and news about pipes and treatment plants use it; everyday talk often just says “the sewers” or “the sewage system.” British English likes to keep sewage and sewerage apart.

This is a more technical word.這是個比較專業的字。 City planners and news about pipes and treatment plants use it都市規劃者，還有講管線和污水處理廠的新聞會用這個字； everyday talk often just says "the sewers" or "the sewage system."日常講話常常就直接說「the sewers下水道」或「the sewage system污水系統」。 British English likes to keep sewage and sewerage apart.英式英語喜歡把sewage和sewerage分開來用。

American English often lets sewage cover both, though actually careful writers still split them.

American English often lets sewage cover both美式英語常常讓sewage一個字就涵蓋兩者， though actually careful writers still split them不過其實講究的作者還是會把兩個字分開。

You would not pour sewerage; you build it, mend it, or pay for it.

You would not pour sewerage你不會說「倒」sewerage， you build it, mend it, or pay for it而是會蓋它、修它，或為它付錢。