用法:
1 of or like a spectre(1) （似）鬼的, 幽灵的:
spectral figures 鬼影.

用法:
2 of the spectrum or spectra 谱的; 光谱的:
spectral colours 谱色.

• non-observance
• no-nonsense
• nonpareil
• non-payment
• nonplus
• non-proliferation
• non-resident 1
• nonsense
• nonsensical
• nonsensically
• non sequitur 1
• non-skid
• non-smoker
• non-smoking
• non-starter
• non-stick
• non-stop
• nonsuch
• non-U
• non-union
• non-violence
• non-violent
• non-white
• noodle 1
• nook