spectrum feature space

例句：

1. 1. The scientist used a spectrum analyzer to study the chemical composition of the sample.
   科学家使用光谱分析仪研究样品的化学成分。
2. 2. The new device has a wider spectrum of applications than its predecessors.
   这款新设备的应用范围比前代产品更广。
3. 3. The spectrum of colors in the painting is breathtakingly beautiful.
   这幅画中的色彩谱令人惊叹。