atmosphere
/ˈætməˌsfɪə(r)/noun
usu. in sing.
1
- the envelope of gases surrounding the earth or another planet（地球或其他星球周围的）大气层：
part of the sun's energy is absorbed by the earth's atmosphere.
太阳的部分能量被地球的大气层所吸收。
1.1
- the air in any particular place（特定场所的）空气：
the atmosphere was unbreathable with cigar smoke.
空气里充满了雪茄的烟味, 无法呼吸。
1.2
- （缩略语： atm）Physics a unit of pressure equal to mean atmospheric pressure at sea level, 101,325 pascals【物理】大气压（压强单位, 相当于海平面平均大气压, 即101,325帕斯卡）。
2
- the pervading tone or mood of a place, situation, or creative work气氛, 环境; 艺术氛围：
the hotel has won commendations for its friendly, welcoming atmosphere
酒店友好热情的气氛赢得了顾客的赞誉
this crisis further compounded the prevailing atmosphere of gloom.
这次危机进一步加剧了当前普遍的抑郁气氛。
2.1
- mass noun a pleasurable and interesting or exciting mood情调; 感染力：
a superb restaurant, full of atmosphere.
一家顶级餐馆, 极具情调。
词源
mid 17th cent.: from modern Latin atmosphaera, from Greek atmos 'vapour' + sphaira 'ball， globe'.