坦然的英文：
calm
undisturbed

参考例句：

To lay bare without suspicion
坦然无疑

That will comfort yours
你就能坦然面对人生(古雅典剧作家米南德)

I went into the box frankly, and setting the silver tankard on the corner of the bench, I sat down before it
我坦然地走进那小屋，把那大号银酒杯放在板凳的角上，我坐在它前面。

We should acknowledge our differences and be comfortable with them.
我们应该承认，并坦然面对彼此的不同。

stoic resignation in the face of hunger(John F.Kennedy)
对饥饿的坦然接受态度(约翰F.肯尼迪)

Tu Wei-yueh pretended not to notice it, though under his mask of urbanity he resented it bitterly
屠维岳坦然装作不懂，却在心里发恨。

Mr. Ma never told his troubles with an open heart.
马先生从未坦然地说过他的苦恼

Her manners were open, easy and decided without any approach to coarseness, or any want of good humour.
她的举止坦然、大方、果断，既不失之于粗俗，又不乏风趣。

Her manners were open, easy and decided…without any approach to coarseness, or any want of good humour
她的举止坦然、大方、果断…既不失之于粗俗，又不乏风趣。

I am going to say what I think of him openly and publicly.
我要公开、坦然地说出我对他的看法。

calm是什么意思：
adj. （水面）平静的，（天气）无风的；镇定的，沉着的，宁静的
n. 平静；无风；镇定；安静
v. 使平静；使镇定；安静下来

The tempest calmed.
暴风雨停息了。

You must keep calm in an emergency.
在紧急关头要保持镇静。

calm zone of Cancer
北半球副热带无风带

To calm down;relax.
冷静下来；轻松

After a storm comes a calm
否极泰来

undisturbed是什么意思：
a. 安静的,镇定的

If you undo an add, the file is left undisturbed.
如果您撤消添加操作，文件将原样保留。

Undisturbed by strife,turmoil,or disagreement;tranquil.
和平的，安宁的不受争斗、骚乱或不和干扰的;安宁的

An undisturbed object continues to move uniformly in a straight line
未受干扰的物体继续沿直线匀速前进。

There was one man impervious to obstacles, impatient with petty calculation, undisturbed by latent tensions: the father of the European Community, Jean Monnet.
欧洲共同体的创始人让·英内是一位一往无前、胸襟坦荡、临危不惧的人物。

The Gona tools lay undisturbed until annual flooding of the nearby Awash river uncovered layers of sediment and the fossilized tools.
附近一年一度泛滥的阿瓦什河将一层层的沉积物和已成化石的石器展现在我们眼前,在此之前，戈纳石器无人触动。