科学素养与生活应用·英语30篇（5）

7 / 30

已读 0 / 30 课

How Rain Gardens Reduce Urban Flooding

雨水花园如何缓解城市内涝

Rain gardens are shallow, planted depressions designed to capture stormwater runoff from roofs, driveways, and sidewalks before it overwhelms sewers.
Native plants with deep roots stabilize soil and create channels for water to infiltrate slowly into the ground instead of rushing into pipes.
The layered soil mix—typically sand, compost, and topsoil—acts like a sponge, holding rainwater temporarily while microbes break down pollutants like oil and heavy metals.
Unlike concrete channels, rain gardens reduce peak flow volume by up to 30%, easing pressure on aging municipal drainage systems during heavy storms.
They also cool surrounding air through evapotranspiration, helping counteract the urban heat island effect in paved neighborhoods.
Local governments often offer rebates for installing rain gardens because they lower infrastructure costs and improve watershed health simultaneously.
Designers calculate size based on catchment area and soil permeability, ensuring the garden drains completely within 48 hours to prevent mosquito breeding.
Community education programs teach residents how to maintain native plants and recognize signs of clogging or erosion that affect long-term function.

精读 · 大约 10 分钟

听 → 读 → 学表达 → 懂 → 今天会说这一句 → 跟读录音 → 自己说一句。

③ 学 · 重点表达

Rain gardens are shallow, planted depressions designed to capture stormwater runoff from roofs, driveways, and sidewalks before it overwhelms sewers. 雨水花园是浅层种植洼地，用于收集屋顶、车道和人行道的雨水径流，防止其涌入并压垮排水系统。
Native plants with deep roots stabilize soil and create channels for water to infiltrate slowly into the ground instead of rushing into pipes. 具有深根系的本土植物可稳固土壤，并形成通道，让雨水缓慢渗入地下，而非快速流入管道。
The layered soil mix—typically sand, compost, and topsoil—acts like a sponge, holding rainwater temporarily while microbes break down pollutants like oil and heavy metals. 分层土壤混合物（通常为沙土、堆肥和表土）像海绵一样暂时蓄水，同时微生物分解油污和重金属等污染物。

④ 懂 · 选一选

这篇中文题目最接近哪一句？雨水花园如何缓解城市内涝一次学校运动会的通知一份超市购物清单

课文第一句的意思更接近？雨水花园是浅层种植洼地，用于收集屋顶、车道和人行道的雨水径流，防止其涌入并压垮排水系统。今天学校放假了。请把窗户打开。

这一课主要在讲什么？（看英文标题） How Rain Gardens Reduce Urban Flooding How to cook noodles A maths worksheet

⑤ 今天会说这一句

Rain gardens are shallow, planted depressions designed to capture stormwater runoff from roofs, driveways, and sidewalks before it overwhelms sewers.

⑥ 跟读并录音

Rain gardens are shallow, planted depressions designed to capture stormwater runoff from roofs, driveways, and sidewalks before it overwhelms sewers.

第一版：录下来、回听、再听标准音。系统打分以后再加。

⑦ 说 · 自己来一句

用今天的表达，自己说一句。

例子：Rain gardens are shallow, planted depressions designed to capture stormwater runoff from roofs, driveways, and sidewalks before it overwhelms sewers.