ultraviolet
含义: Electromagnetic radiation with wavelengths shorter than visible violet light but longer than X-rays, responsible for sunburn and used in sterilisation, fluorescence analysis, and astronomy.
Ultraviolet (UV) radiation is subdivided into UVA, UVB, and UVC bands. The Earth's ozone layer absorbs most harmful UVC and UVB radiation. In practical applications, UV light is used to sterilise water and surfaces, detect forged documents, cure adhesives, and study stellar phenomena. The abbreviation UV is standard in both scientific and everyday English, as in 'UV index' and 'UV protection.'
例句
- The dermatologist warned that prolonged exposure to ultraviolet radiation significantly increases the risk of skin cancer. 皮肤科医生警告说,长期暴露于紫外线辐射会显著增加患皮肤癌的风险。El dermatólogo advirtió de que la exposición prolongada a la radiación ultravioleta aumenta significativamente el riesgo de cáncer de piel.皮膚科医は、紫外線への長時間曝露が皮膚がんのリスクを大幅に高めると警告した。피부과 의사는 자외선에 장시간 노출되면 피부암 위험이 크게 높아진다고 경고했다.
- Ultraviolet imaging of the manuscript revealed text that was invisible to the naked eye, hidden beneath later overwriting. 对手稿的紫外成像揭示了肉眼不可见的文字,隐藏在后来的覆写之下。La imagen ultravioleta del manuscrito reveló un texto invisible a simple vista, oculto bajo una escritura posterior.その写本の紫外線撮影により、後の上書きの下に隠されていた、肉眼では見えないテキストが明らかになった。필사본의 자외선 촬영을 통해 후대의 덧쓰기 아래에 숨겨져 육안으로는 보이지 않았던 텍스트가 드러났다.
- The water treatment plant installed ultraviolet sterilisation units to eliminate bacteria without the use of chemical disinfectants. 水处理厂安装了紫外线消毒装置,无需化学消毒剂即可消灭细菌。La planta de tratamiento de aguas instaló unidades de esterilización ultravioleta para eliminar bacterias sin recurrir a desinfectantes químicos.浄水場は化学消毒剤を使用せずに細菌を除去するため、紫外線殺菌装置を導入した。정수장은 화학 소독제를 사용하지 않고 세균을 제거하기 위해 자외선 살균 장치를 도입했다.
发音
用法指南
语境: scientific, professional, general
语气: neutral
起源与历史
From Latin ultra (beyond) and violet, the highest-frequency colour visible to the human eye. The term was coined in the early 19th century after Johann Ritter discovered UV radiation in 1801.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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