n.

1. 大气[the S]
2. （某特定场所的）空气[S]
   The atmosphere of the city is very much polluted.

   那个城市的空气受到严重污染。

3. 气氛[S1]
   The talk was conducted in a cordial atmosphere.

   会谈是在热情友好的气氛中进行的。

4. 情趣；魅力[U]
   The ancient palace has a lot of atmosphere.

   这座古老的宫殿很有魅力。

5. （标准）气压[C]

n.

1. the envelope of gases surrounding the earth or another planet.
   ▸the air in a particular place.
2. a pervading tone or mood.
   ▸a pleasurable and interesting or exciting mood.
3. Physics  a unit of pressure equal to mean atmospheric pressure at sea level, 101,325 pascals (roughly 14.7 pounds per square inch).