It was in an area known as the Sea of Tranquility.

VOA: special.2009.07.15

Poetry, in Frost, is action, not a matter, as Wordsworth would say, of emotion recollected in tranquility.

就像华兹华斯说的诗歌对于弗罗斯特是动作不是事情，不是冷静时收集的情绪。

耶鲁公开课 - 现代诗歌课程节选

Attached to Tranquility is a robotic control station with six windows around its sides and another in the center.

VOA: standard.2010.02.08

In a nationally televised message, Mr.Zuma called for tranquility to allow a full investigation into the incident.

VOA: standard.2010.04.05