英语语法分析

He would tell her, "Oh, sinful wretch, who is spreading disease and filth like an open sewer."

他会告诉她：“噢，可恶的家伙，像露天下水道一样传播疾病和污秽。”

Concerns about public health led to the construction between 1876 and 1904 of three separate sewer systems to serve metropolitan Boston.

出于对公众健康的担忧，1876年至1904年期间，为了服务于波士顿市区，政府修建了三个独立的下水道系统。

The alligators would escape and find their way into the New York sewer system where they started reproducing, grew to huge sizes and now strike fear into sewer workers.

短吻鳄会逃跑，找到进入纽约下水道系统的路并开始在那里繁殖，长得巨大，现在还使得下水道工人感到害怕。