n.

1. 氣味
2. 氣氛
   The meeting was convened in an aura of peace and harmony.

   會議在和平及和諧的氣氛中進行。

3. 靈氣
4. 【醫】（中風等症的）預兆
5. 光環

n.

1. the distinctive atmosphere or quality that seems to be generated by someone or something.
2. (in spiritualism and some forms of alternative medicine) a supposed emanation surrounding the body of a living creature.
3. Medicine  a warning sensation experienced before an attack of epilepsy or migraine.