infrared

1. ADJ Infrared radiation is similar to light but has a longer wavelength, so we cannot see it without special equipment. 红外线的[ADJ n]

2. ADJ Infrared equipment detects infrared radiation. 使用红外线的[ADJ n]

...searching with infrared scanners for weapons and artillery. …用红外线扫描仪搜查武器和大炮。