The sun came out in full splendor and the sea became as calm as a lake.

阳光绚烂，大海平静如湖面。

youdao

The sea was as calm as a millpond.

海上风平浪静。

《牛津词典》

Christie looked relaxed and calm as he faced the press.

克里斯蒂面对媒体时显得轻松而镇静。

《柯林斯英汉双解大词典》

I felt as calm as ever.

VOA: special.2009.07.18

It's a little bit like Aristotle's idea of catharsis, which can be understood in a variety of ways, but Milton at the end of Samson Agonistes understands it in one way when he says, Now we have as a result of this tragedy "calm of mind, all passion spent."

这有点像亚里士多德的精神发泄法理论，我们可以通过各种方法来理解，但是米尔顿在《力士参孙》一书的结尾,有另一种理解，他写道，这个悲剧使我们拥有了,“平静的精神，耗尽的热情“

耶鲁公开课 - 文学理论导论课程节选

You might say a person is as cool as a cucumber if he never seems to worry about anything and stays calm in a stressful situation.

VOA: special.2011.02.13

Mei Xiang appeared to be calm as keepers monitored her Sunday afternoon, Murray said.

CNN: Panda cub dies at Smithsonian's National Zoo

Parody footage, showing Mrs Clinton calm as heads fly off around her, quickly appeared on the internet.

ECONOMIST: The Democrats

The only person who cheers you up is Michael Caine, who remains knowingly calm as the chaos descends.

NEWYORKER: Bewitched