infrared

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

2. ADJ Infrared equipment detects infrared radiation. 使用紅外線的[ADJ n]

...searching with infrared scanners for weapons and artillery. …用紅外線掃描儀搜查武器和大砲。