drainage

drainage — 名詞

1. the network of pipes, channels, or ditches that carries rainwater and waste liqu

1.名詞B2
釋義

排水

將水或廢水排走的管道系統

the network of pipes, channels, or ditches that carries rainwater and waste liquids away from buildings, roads, and other places to a treatment or release point.

例句

The old drainage in the city centre cannot handle the sudden heavy storms we get.

市區老舊的排水無法應付現在突如其來的大豪雨。

drainage + handle [volume of water] — capacity failure

Eli fixed the drainage around his house after water seeped into the basement.

Eli 修繕了房屋周邊的排水，因為水已經滲進地下室了。

drainage around [location] — physical infrastructure

同義詞
  • sewer system

    specifically for waste water from buildings, usually underground

  • drain network

    emphasises the connected pipes rather than the overall system

  • runoff management

    more formal; focuses on controlling surface water rather than removing it

反義詞
  • waterlogging

    the problem that occurs when drainage is absent or fails

文法句型

uncountable — never 'a drainage' or 'drainages'

often used as a noun modifier: drainage system, drainage pipe

用法筆記

As an uncountable noun, drainage cannot be used with 'a' or in the plural form. It refers either to the infrastructure itself or to the process of water flowing away. When talking about a single pipe, use 'drain' instead.

常見錯誤

❌The city built new drainages along the main road.
✅The city built new drains along the main road.
💡drainages is not a standard plural; use drains for individual pipes.
❌There is a drainage in the kitchen floor.
✅There is a drain in the kitchen floor.
💡use drain for a single opening; drainage describes the whole system.

2. the speed or ease with which water moves downward through soil or another materi

2.名詞B2
釋義

排水性

土壤讓水流走的能力

the speed or ease with which water moves downward through soil or another material, rather than staying on the surface or making the ground too wet.

例句

Sandy soils usually have excellent drainage, so water never stays on the surface for long.

沙質土壤通常排水性極佳，水從不會在表面停留太久。

excellent/poor/good drainage — quality of soil

Xiu added sand and compost to improve the drainage of the clay in her garden.

Xiu 在花園裡添加了沙子與堆肥，以改善黏土的排水性。

improve the drainage — active intervention

同義詞
  • soil permeability

    more technical; used in engineering and earth science contexts

  • water infiltration

    focuses on the downward movement into the soil rather than the overall ability

反義詞
  • waterlogging

    the condition of soil that stays too wet because drainage is poor

  • compaction

    a cause of poor drainage, when soil is pressed too tight for water to pass through

文法句型

uncountable — often used with an adjective: good drainage / poor drainage / natural drainage

用法筆記

This sense is used almost exclusively with an adjective such as good, poor, excellent, or natural. It is most common in gardening, agriculture, and construction contexts. Distinguish from sense 1: sense 1 describes the built infrastructure (pipes, channels), whereas sense 2 describes a natural property of the soil itself.

常見錯誤

❌The land has a good drainage.
✅The land has good drainage.
💡never add 'a' before an uncountable noun.
❌The drainage of the soil is quick.
✅The soil has good drainage.
💡more natural phrasing uses have/has + adjective + drainage.