核心词议：
n. 表层土
v. 去掉表土
topsoil 基本解释
n. 表土（层），耕作（层）；耕层
速记方法
知识扩展
中文词源
中文词源： topsoil
精选例句
1、 Many farmers use good conservation practices,and the state’s rich topsoil in many areas is deep enough to last decades with moderate amounts of erosion.
很多农民采用较好的保护土地的措施，并且爱荷华州广袤而丰饶的表层土的深度足以持续数十年适度的大量土地侵蚀。
常见考点例句：
- The agriculture ministry now says removing that contaminated topsoil may be effective .
- 农业省现在表示去除受污的表土可能有效。
- When city council finally decided to build housing on the section , gardeners and their friends moved an acre of topsoil to the remaining portion of the garden .
- 当市议会最终决定要在该地区建设公寓时，园丁们与他们的朋友一起将一英亩土地的表土搬运到花园的剩余部分。
- Koriyama officials contacted nuclear experts and were told that removing a layer of topsoil from school grounds could reduce radiation levels , because cesium tends to collect in the top layers .
- 郡山市当局联系了核专家，被告知除掉学校场地上的一层表土可以降低辐射程度，因为铯通常会在土壤上层聚集。
- If just four centimeters of topsoil is scraped off the contaminated farmland , the ministry says , it would create 3.3 million tons of waste .
- 农业省说，即便只给受污染的农田刮去4厘米厚的表土，就会产生330万吨的废土。
- A new cleanup law doesn 't take effect until january . Cities across fukushima prefecture are scraping contaminated topsoil off school grounds and parks , but tokyo hasn 't yet decided where to store the tainted material .
- 新的清理核辐射法到明年1月才生效，福岛县各市正在将学校场地和公园内受污染的表土挖掉，但是东京方面却尚未决定在哪里存贮污染物。
