Notice how very casual Yeats is in that second strophe, how self-consciously fantastic and speculative he is.

注意叶芝在第二节,是多么随意，多么自觉的神奇,多么敏锐。

耶鲁公开课 - 现代诗歌课程节选

It was a just very casual relationship.

那只是非常普通的关系。

The thing is 实战 - SpeakingMax英语口语达人

But still is very professional and you can use it in any setting, business or casual.

但它也同样可以是很专业的表达，可以用在商务或是生活的各种语境。

Is it okay 课堂 - SpeakingMax英语口语达人

And it was very casual.

当时非常随意。

普林斯顿公开课 - 人性课程节选

The "is it okay" question is very useful at making your speech a little less casual.

is it okay”问句可以用来让你的对话变得随意一点。

Is it okay 课堂 - SpeakingMax英语口语达人