The car was in first-class condition.

当时车子处于最佳状态。

《牛津词典》

I met Elizabeth in my very first karate class. I was the only new kid in the class.

我是在空手道的第一次课上遇见伊丽莎白的，当时我是班上唯一一个新来的。

youdao

Tuesday was like any other day for Morgan Bailey, It was the fourth period, and she was the first student to arrive in the gym for her class.

对摩根·贝利来说，周二和往常一样，是第四节课，她是第一个到体育馆上课的学生。

youdao

That was when twenty-five students in a class taught by Thomas Zurbuchen first talked about the idea.

VOA: special.2009.02.16

I alluded to this a little bit in the first class about how humans have evolved to seek out energy because famine was the largest threat is one example of this.

第一节课的时候我提到了,人类是如何演化以便寻找能量,因为饥荒是最大的威胁,这是其中一例

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

It is my luck that I was in the second-class compartment and the explosion was in the first-class compartment.

BBC: NEWS | South Asia | Carnage and courage in Mumbai

Arguably, the MacBook Air was the first in the Ultrabook class.

FORBES: Ultrabooks Step Into The Limelight

The contrasts between the military and corporate America are stark to Marene Nyberg Allison, who was in the first class of women at the U.S. Military Academy, graduating in 1980.

NPR: Military's Sexual-Assault Problem Has Deep Roots