Sources of Pollution · 污染源
| English | 中文 | Pinyin · 拼音 |
|---|---|---|
| point source/pɔɪnt sɔːs/ | 点源 | diǎn yuán |
| nonpoint source/ˌnɒnˈpɔɪnt sɔːs/ | 非点源 | fēi diǎn yuán |
Where pollution comes from
- To clean up pollution, first find where it comes from.
- Some pollution pours from one clear spot.
- Some seeps in from everywhere at once.
- Scientists split sources into two types.
污染从哪里来
- 要清理污染,先找到它从哪里来。
- 有些污染从一个清晰的点涌出。
- 有些同时从各处渗入。
- 科学家把污染源分成两类。
Point sources
- A point source 点源 comes from one identifiable spot.
- A factory's discharge pipe is a point source.
- So is a single sewage outfall or one oil spill.
- You can point to it on a map — hence the name.
点源
- 一个点源(point source)来自一个可辨认的点。
- 一根工厂的排放管是点源。
- 一个单独的污水排放口或一次石油泄漏也是。
- 你能在地图上指出它——因此得名。
A point source of pollution is… · 污染的点源是……
A point source comes from one clear location — a factory pipe, a smokestack, a single spill. · 点源来自一个清晰的位置——一根工厂管道、一个烟囱、一次单独的泄漏。
Nonpoint sources
- A nonpoint source 非点源 is spread out and diffuse.
- Rain washing fertilizer off many farms is nonpoint.
- So is oil and grime rinsed from every city street.
- There is no single pipe — it comes from the whole landscape.
非点源
- 一个非点源(nonpoint source)是分散且弥散的。
- 雨把化肥从许多农场冲走是非点源。
- 从每条城市街道冲洗下来的油和污垢也是。
- 没有单一的管子——它来自整个地貌。
Point source or nonpoint source? · 点源还是非点源?
Sort each pollution source by whether it comes from one spot or many spread-out places. · 按照每个污染源来自一个点还是许多分散的地方,给它们分类。
A nonpoint source is harder to control because it… · 非点源更难控制,因为它……
A nonpoint source is diffuse — runoff from many farms or streets — so there is no single pipe to plug. · 非点源是弥散的——来自许多农场或街道的径流——所以没有单一的管子可堵。
Rain washing pollutants off fields and roads into rivers is called . · 雨把污染物从田地和道路冲入河流,叫做。
Runoff carries diffuse pollutants off the land — the classic nonpoint source. · 径流把弥散的污染物从陆地带走——典型的非点源。
Why the difference matters
- A point source is easier to control — filter or plug one pipe.
- A nonpoint source is much harder — you cannot filter a whole region.
- Nonpoint pollution is now the bigger water-quality problem.
- Fixing it means changing how we farm, drive, and build across the land.
为什么这个区别重要
- 点源更容易控制——过滤或堵住一根管子。
- 非点源难得多——你无法过滤整个地区。
- 非点源污染现在是更大的水质问题。
- 解决它意味着改变我们在这片土地上耕作、开车和建造的方式。
Point sources are usually easier to control than nonpoint sources. · 点源通常比非点源更容易控制。
You can put a filter on one pipe; you cannot easily filter runoff from a whole countryside. · 你能在一根管子上装过滤器;你无法轻易过滤整个乡村的径流。
Select all · 所有 point sources of pollution. · 选出所有污染的点源。
A pipe, an outfall, and a single spill are all point sources. Runoff from many farms is nonpoint. · 一根管子、一个排放口和一次单独泄漏都是点源。来自许多农场的径流是非点源。
The test is simple: can you point to one spot on a map? A pipe, an outfall, a spill — point source. If instead it's washing off everywhere — farms, lawns, roads, parking lots — it's a nonpoint source. The distinction matters because point sources can be regulated at the pipe, while nonpoint pollution has no single pipe to control.
判断很简单:你能在地图上指出一个点吗?一根管子、一个排放口、一次泄漏——点源。如果它是从各处冲下来的——农场、草坪、道路、停车场——它是非点源。这个区别重要,因为点源能在管子处被监管,而非点源污染没有单一的管子可控制。
Two polluted rivers:
- In one, a factory's pipe pours chemicals straight into the water — a point source you can find, measure, and order shut.
- In the other, no single pipe is to blame: fertilizer from a hundred farms and oil from every road wash in with the rain — a nonpoint source that no single fix can stop.
两条污染的河:
- 一条里,一根工厂的管子把化学物质直接倒入水中——一个你能找到、测量并勒令关闭的点源。
- 另一条里,没有单一的管子该受责怪:来自一百个农场的化肥和来自每条道路的油随雨冲入——一个没有单一办法能阻止的非点源。
Pollution sources are point or nonpoint. A point source comes from one identifiable spot (a pipe, an outfall, a spill) and is easier to control. A nonpoint source is diffuse — runoff from many farms, streets, and lawns — and is much harder to fix because there is no single pipe to plug.
污染源是点源或非点源。一个点源来自一个可辨认的点(一根管子、一个排放口、一次泄漏),更容易控制。一个非点源是弥散的——来自许多农场、街道和草坪的径流——难解决得多,因为没有单一的管子可堵。