contaminant
含义: A substance that makes something impure or unsuitable by its presence, especially a pollutant introduced into the natural environment, food supply, or water system.
Contaminants can be chemical (heavy metals, pesticides, pharmaceuticals), biological (bacteria, viruses), or physical (microplastics, sediment). Environmental regulation in the UK sets maximum permissible levels for contaminants in drinking water, soil, and air. The term is broader than 'pollutant' and can apply to any unwanted substance, including those in industrial processes, scientific experiments, or food production. It collocates with 'soil,' 'groundwater,' 'chemical,' 'trace,' and 'emerging.'
例句
- Testing revealed elevated levels of lead as a contaminant in the drinking water supply, likely originating from Victorian-era pipes. 检测结果显示,饮用水中铅作为污染物的含量超标,其来源可能是维多利亚时代的管道。Los análisis revelaron niveles elevados de plomo como contaminante en el suministro de agua potable, probablemente procedente de tuberías de la época victoriana.検査の結果、飲料水中に鉛が汚染物質として高濃度で検出され、ヴィクトリア朝時代の配管が原因と考えられました。검사 결과 식수 공급에서 납이 오염물질로 높은 수치로 검출되었으며, 빅토리아 시대의 배관이 원인으로 추정되었습니다.
- The Environment Agency required the developer to remediate the site after identifying several hazardous contaminants in the soil. 环境署要求开发商在土壤中发现多种有害污染物后对场地进行修复。La Agencia de Medio Ambiente exigió al promotor la descontaminación del terreno tras identificar varios contaminantes peligrosos en el suelo.土壌中に複数の有害汚染物質が確認された後、環境庁は開発業者に用地の浄化を求めました。토양에서 여러 유해 오염물질이 확인된 후, 환경청은 개발업자에게 부지 정화를 요구했습니다.
- Emerging contaminants such as pharmaceutical residues and microplastics pose new challenges for water treatment plants. 药物残留和微塑料等新兴污染物给水处理厂带来了新的挑战。Los contaminantes emergentes, como los residuos farmacéuticos y los microplásticos, plantean nuevos retos para las plantas depuradoras de agua.医薬品残留物やマイクロプラスチックなどの新興汚染物質は、水処理施設に新たな課題をもたらしています。의약품 잔류물과 미세플라스틱 같은 신규 오염물질은 수처리 시설에 새로운 과제를 안겨주고 있습니다.
发音
用法指南
语境: academic, general
语气: neutral
起源与历史
From Latin contaminare (to make impure, pollute), from contamen (contact, pollution). The noun form entered English in the mid-20th century.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
更多同类表达
More from General Advanced