宁静的英文：
tranquil
tranquility
serenity
peace and quiet

参考例句：

Quietness is best
宁静最好

Peace of mind;satisfaction in one's mind
内心的宁静

A peaceful garden
宁静的花园

Of a peaceful nature; tranquil.
温和的，宁静的属于安静的天性的；宁静的。

stigmatize calmness as indolence
把宁静诬蔑为懒惰

An invalid restored By quiet and fresh air
通过宁静和新鲜的空气而恢复健康的病人

They extol the virtues of the peaceful life.
对于农村宁静生活的美处，他们称赞不已。

The phenomenon was so striking and disturbing that his philosophical tranquility vanished.
这个令人惶惑不安的现象，扰乱了他的旷达宁静的心境。

The commotion of care and sickness was lifting and a spacious peace was enveloping us
护理的繁忙和疾病带来的混乱正在消失，一种宽阔无边的宁静正笼罩着我们。

Just loll there: quiet dusk: let everything rip
只消懒洋洋地享受这宁静的黄昏，一切全听其自然。

tranquil是什么意思：
adj. 安静的；安宁的

I love tranquil solitude.
我热爱安静的独处。

The place was tranquil and appealing.
那个地方恬静宜人。

It promotes tranquility and healing.
它能提升平静感和具有愈合效果。

tranquility是什么意思：
n. 平静；宁静

I love tranquil solitude.
我热爱安静的独处。

The place was tranquil and appealing.
那个地方恬静宜人。

It promotes tranquility and healing.
它能提升平静感和具有愈合效果。

serenity是什么意思：
n. 平静，宁静

a serene autumnal mood.
平静的已过中年的心情。

It was their serenity which galled her most.
最让她恼怒的是他们的平静。

yet do they convey a hint of beauty and serenity,
但它确实给予我们一种美感和静谧的启示。