the spillway of + 水坝/设施
用 of 说明溢洪道属于哪座水坝或哪种水利设施。
The spillway of the dam was widened after the flood.
洪水过后，这座大坝的溢洪道被加宽了。
溢洪道
泄洪道；[电] 流溢水路
a passage that lets excess water flow away safely
溢洪道。
A path designed to take away overflow safely.
After the heavy rain, water rushed down the spillway to prevent the dam from breaking.
大雨过后，水沿着溢洪道奔流而下，以防止大坝溃决。
用法提示：spillway 是名词，指让多余水流安全泄出的溢洪道。
The engineers inspected the spillway before the flood season began.
工程师们在汛期开始前检查了溢洪道。
用法提示：spillway 是名词，在本句中作 inspected 的宾语，表示溢洪道。
A wide spillway carries excess water away from the reservoir during storms.
暴风雨期间，宽阔的溢洪道将多余的水从水库排走。
用法提示：spillway 是名词，用作句子主语，表示溢洪道。
用 of 说明溢洪道属于哪座水坝或哪种水利设施。
The spillway of the dam was widened after the flood.
洪水过后，这座大坝的溢洪道被加宽了。
for 后面接名词或动名词，说明溢洪道的用途。
Engineers built a spillway for releasing excess water.
工程师修建了一条溢洪道，用来排放多余的水。
spillway 放在另一名词前作定语，构成复合名词，如溢洪闸门、溢洪道泄槽。
The spillway gates were opened to lower the water level.
溢洪闸门被打开以降低水位。
grammar · medium
易错句子Spillway is built to release extra water from a dam.
正确表达A spillway is built to release extra water from a dam.
英语中可数名词单数不能裸用，必须加冠词或限定词（a/the/my 等）。汉语名词前常无需冠词，容易漏掉 a。改正后符合 spillway 作为可数名词单数的语法要求。
grammar · medium
易错句子The dam has two spillway.
正确表达The dam has two spillways.
spillway 是可数名词，前面有数词 two 时要用复数形式 spillways。汉语名词没有复数变化，容易忘记加 -s。
grammar · medium
易错句子The spillway is used for control the water level in the reservoir.
正确表达The spillway is used to control the water level in the reservoir.
表示用途时，used 后接 to do 或 for doing，不能接 for + 动词原形。汉语“用来控制”容易直译成 for control，应改为 to control 或 for controlling。
spill 是动词或普通名词，指液体从容器或河道里洒出、溢出的动作；spillway 是可数名词，指水坝旁专门用来安全排走多余洪水的通道建筑。
overflow 泛指漫出容器或河道的水或液体本身；spillway 是具体的人工泄水结构，用于把水库中多余的洪水安全引走。
weir 是横跨河道、用来抬高或测量水位的低坝；spillway 一般建在坝体一侧，是专门让多余洪水绕过大坝安全下泄的通道。
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