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通常使用定冠词the特指某个下水道。
The sewer overflowed after the heavy rain.
暴雨后下水道溢水了。
下水道
先理解核心含义，再看它在真实句子里的用法。
下水道
a pipe or channel for carrying away waste water and sewage
The sewer overflowed after the heavy rain.
暴雨后下水道溢水了。
用于清除人类废物和排水的管道或沟渠,或管道系统。
A pipe or channel, or system of pipes or channels, used to remove human waste and to provide drainage.
缝纫者。
One who sews.
排放污水或地表水的管道
a waste pipe that carries away sewage or surface water
一种小型卷叶蛾,其幼虫用丝将叶片边缘缝合在一起。
A small tortricid moth, the larva of which sews together the edges of a leaf using silk.
The city's sewer system is old and needs repair.
城市的下水道系统老旧，需要维修。
AI contextual example
Rats often live in the sewers.
老鼠经常生活在阴沟里。
AI contextual example
Rainwater flows into the sewer through drains.
雨水通过排水沟流入下水道。
AI contextual example
a sewer of fine gowns
一条精美礼服的下水道
WordNet
通常使用定冠词the特指某个下水道。
The sewer overflowed after the heavy rain.
暴雨后下水道溢水了。
表示位置，介词in后接the sewer。
Waste water flows into the sewer.
废水流入下水道。
sewer作定语修饰system，表示排水系统。
The city's sewer system needs updating.
城市的排水系统需要更新。
不定冠词a表示泛指一条下水道。
A sewer runs beneath the street.
一条下水道在街道下面通过。
Not this
Sewer is blocked, causing flooding.
Use this
A sewer is blocked, causing flooding.
在英语中，'sewer'（下水道）是可数名词，表示具体的一个下水道管道。当泛指一个下水道时，需要使用冠词'a'或'the'。中文表达'下水道堵了'可以泛指，但英语需要明确是哪一个下水道，因此要加冠词。
Not this
He threw the paper in the sewer.
Use this
He threw the paper into the sewer.
当表示'扔进下水道'时，动词'throw'等移动动词后通常使用'into'表示进入内部，而'in'多表示静态位置。中文的'进'常被误译为'in'，但这里应用'into'。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
下水道系统
The city is upgrading its old sewer system.
该市正在升级其旧的下水道系统。
污水管
A tree root had grown into the sewer pipe.
树根长进了污水管。
污水管道
The main sewer line was blocked with debris.
主污水管道被杂物堵塞了。
雨水下水道
Storm sewers help prevent flooding during heavy rain.
雨水下水道有助于防止大雨期间的内涝。
卫生下水道
Sanitary sewers carry waste from homes to treatment plants.
卫生下水道将家庭废水输送到处理厂。
下水道溢流
Heavy rainfall caused a sewer overflow in the city.
强降雨导致城市下水道溢流。
下水道就是我们的家。
In the 1990 film Teenage Mutant Ninja Turtles, the turtles live in the New York sewers and this line emphasizes their identity.
在1990年的电影《忍者神龟》中，神龟们住在纽约的下水道里，这句台词强调了它们的身份。
Use sewer naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象缝纫者（sewer）掉进下水道（sewer），缝纫的人和下水道同形，记住两者。
通常用于描述城市排水系统或家庭管道，语体中性，多见于技术文档或日常维修对话。
Words like brewer, chewer, doer, suer rhyme with /suɚ/ because they share the /uɚ/ ending. Beware of lookalikes like viewer (/ˈvjuɚ/) and skewer (/ˈskjuɚ/) which have an added /j/ glide before the vowel.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.