The spectrum is the range of different colours which is produced when light passes through a glass prism or through a drop of water. A rainbow shows the colours in the spectrum.
双语例句
例：
lights known as ultraviolet because on the colour spectrum they lie above violet.
位于紫色光谱之上的光线被称为紫外线。
例：
Yellow is the most luminous of the colour spectrum.
黄色是色谱中最明亮的颜色。
2.?[C 可数名词] 范围
A spectrum is a range of a particular type of thing.
近义词
range
双语例句
例：
She'd seen his moods range across the emotional spectrum.
她见识过他的情绪波动会有多大。
例：
Politicians across the political spectrum have denounced the act.
各党派的政客们都对该行为表示谴责。
例：
The term 'special needs' covers a wide spectrum of problems.
“特殊需要”这个术语涵盖很广泛的一系列问题。
3.?[C 可数名词] 光谱
A spectrum is a range of light waves or radio waves within particular frequencies.
双语例句
例：
Vast amounts of energy, from X-rays right through the spectrum down to radio waves, are escaping into space.
大量的能量，从X光直到无线电波，都正被泄露到太空中去。
例：
The individual colours within the light spectrum are believed to have an effect on health.