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drainage of [noun phrase]
The drainage of the swamp took several months.
沼泽的排水花了几个月时间。
排水；放水；排泄
先理解核心含义，再看它在真实句子里的用法。
排水；放水；排泄
the process or means of removing liquid from an area or container by letting it flow away
The drainage of the swamp took several months.
沼泽的排水花了几个月时间。
将某一区域液体引流排出的天然或人工方法。
A natural or artificial means for the removal of fluids from a given area by its draining away.
排水；排空
emptying something accomplished by allowing liquid to run out of it
排水系统。
A system of drains.
向下吹的风。
A downward wind.
The drainage in this area is poor, causing frequent flooding.
这个区域的排水系统很差，导致频繁的洪水。
Proper drainage is essential for a healthy garden.
良好的排水对健康的花园至关重要。
They installed a new drainage system to prevent water accumulation.
他们安装了新的排水系统以防止积水。
The drainage of the swamp took several months.
沼泽的排水花了几个月时间。
常用形容词：good, poor, proper, natural
This area has poor drainage.
这个区域排水不畅。
drainage作定语修饰名词
They installed a new drainage system.
他们安装了新的排水系统。
Not this
We need to drainage the water from the field.
Use this
We need to drain the water from the field.
drainage是名词，不能用作动词。应使用动词drain表示'排水'。
Not this
The kitchen drainage is clogged.
Use this
The kitchen drain is clogged.
drainage指整个排水系统，而具体的管道或下水口用drain。此处指具体的管道堵塞，应使用drain。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
排水系统
The drainage system in this old building is inefficient.
这座旧建筑的排水系统效率低下。
流域
The Amazon River has the largest drainage basin in the world.
亚马逊河拥有世界上最大的流域。
排水管
A blocked drainage pipe caused flooding in the basement.
排水管堵塞导致地下室被淹。
排水沟
Farmers dug a drainage ditch to prevent waterlogging in the fields.
农民挖了一条排水沟以防田地积水。
排水区域
The city is expanding the drainage area to cope with heavy rains.
该市正在扩大排水区域以应对暴雨。
良好的排水
Proper drainage is essential for a healthy garden.
良好的排水对于健康的花园至关重要。
发长 /eɪ/ 音 (如 rain, wait)
Use drainage naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 drainage 拆成 drain（排水）和 age（年龄），想象老旧的排水管道。
通常用于工程、农业、环境等正式或技术场合，指排水系统或排水过程。
通常不可数，但可指不同类型的排水系统时用复数 drainages。
Dictionary facts from ECDICT, WIKTIONARY.