同义词

n. placidity，quiet，quietness，tranquility

参考例句

1. This tranquillity was not the least beautiful spectacle of this agitated epoch.
那种平静并非是那动荡时代最不美的景象。
2. TRANQUILLITY. Be not disturbed at trifles, or at accidents common or unavoidable.
镇静，勿因小事、平常的或不可避免的事故而惊慌失措。
3. In any event the mood of the American party did not match the tranquillity of the scenery.
我们这一行美国人的情绪无论如何同这景致的平静不相协调。

英英解释

n.
  1. an untroubled state; free from disturbances
  2. a state of peace and quiet
  3. a disposition free from stress or emotion

网络释义

tranquillity
心神稳定，安宁; 宁静; 安静; 安定;
Dark tranquillity
沉寂黑暗; 哥德堡之声; 寂静黑暗乐团; 寂静黑暗;
T Tranquillity
死亡金属;
Tranquillity Base
静海基地;
tranquillity property
宁静性质;