infrared
/ˌɪnfrəˈred/
adj. / n.
标准词条
CET-4
一句话记住
红外线的;红外的;红外线
释义与例句
adj.
红外线的;红外的
having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves
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The camera uses infrared light to take pictures in the dark.
这台相机使用红外线在黑暗中拍照。
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Infrared waves can be felt as heat on the skin.
红外线可以被皮肤感觉到热量。
展开其余 1 条例句
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The remote control sends an infrared signal to the TV.
遥控器向电视发送红外信号。
n.
红外线
infrared radiation or light
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Night-vision goggles detect infrared emitted by warm bodies.
夜视仪能检测温热身体发出的红外线。
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Infrared is invisible to the human eye.
红外线对人眼是不可见的。
展开其余 1 条例句
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Scientists use infrared to study distant stars.
科学家用红外线研究遥远的恒星。
词源与构词
记忆钩子
infrared = infra(在……之下)+ red(红),频率低于红光的不可见光,即红外线。注意与 ultraviolet(紫外线)区分。
词族与关联词
易混词(形近或义近,注意区别)
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ultraviolet 紫外线的infrared(红外)位于红光之外,波长更长,表现为热;ultraviolet(紫外)位于紫光之外,波长更短,能量更高。二者分别处于可见光谱的两端,不可混淆。Too much ultraviolet light can damage your skin. 过多紫外线会损伤皮肤。
常见搭配
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infrared light 红外光Security cameras often use infrared light at night. 安防摄像头常在夜间使用红外光。
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infrared ray 红外线Infrared rays are used in many medical treatments. 红外线被用于许多医疗治疗中。
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infrared spectrum 红外光谱Chemists analyze substances using the infrared spectrum. 化学家利用红外光谱分析物质。