first-class

基本解释

Offer it to the first-class houses.
把它寄给第一流的出版社。
What Harve needed, of all people, was a course in some first-class Kansas City business college.
哈维需要的，人人都一样，是念一所第一流的堪萨斯市立商学院的课程。
That newspaper paragraph he had read so long ago had been true, after all. The first-class magazines did not pay on acceptance, and they paid well.
他很久以前在报上读到的那一段话毕竟没有错：第一流的杂志的确是一经采用立即付酬的，而且稿酬从优。

That was when twenty-five students in a class taught by Thomas Zurbuchen first talked about the idea.
The in class mid-terms--the grades will be roughly 10% problem sets, 20% first mid-term, 30% second mid-term, 40% final.
期中那次是随堂考,在最后成绩中,习题成绩占10%,第一次期中占20%,第二次期中占30%,期末考试占40%
耶鲁公开课 - 金融市场课程节选
It's a huge price to pay in a pass-no-record first semester class . And, you know who is most severe on the committee on discipline?
这个代价太大了，只为了,第一次学期通过一门无记录的课程,你们知道着纪律委员会,谁最为严厉吗？
麻省理工公开课 - 固态化学导论课程节选

If you describe something or someone as first-class, you mean that they are extremely good and of the highest quality.
You use first-class to describe something that is in the group that is considered to be of the highest standard.
First-class accommodations on a train, aeroplane, or ship are the best and most expensive type of accommodations.
First-class is also an adverb.
First-class is the first-class accommodations on a train, aeroplane, or ship.
In the United States, first-class postage is the type of postage that is used for sending letters and postcards.