adj.幽靈的；光譜的

There was no change in his father's position, or in his spectral look. 他父親的姿勢(shì)一點(diǎn)沒有更動(dòng)，陰沉的臉色也依然不變。

At times he seems rather ordinary. At other times ethereal, perhaps even spectral. 有時(shí)他好像很正常,有時(shí)又難以捉摸,甚至像個(gè)幽靈。

Beings without form and intelligences without bodies are spectral ghosts guaranteed to mislead. 無體生命和無形智能，注定是引人誤入歧途的鬼怪幽靈。

I am studying spectral classification. 我在學(xué)習(xí)光譜分類。

The visible is the most well-defined spectral region. 可見光是含意最明確的光譜波段。

雙譜