a first-aid book 一本急救的书 ; 关于急救的书
a first-class ticket 头等机票
a first-aid kit 急救箱
a first-aid box 一个急救箱 ; 一只急救箱
a first concern 第一个关注的问题
That wasn't bad for a first attempt.
第一次尝试,还算不错。
Tickets are available on a first come, first served basis.
票先来先买,售完为止。
She got a first in maths at Exeter.
她在埃克塞特大学毕业,获数学一级优等学位。
I was a first-year student at Johns Hopkins University in Baltimore, and was relaxing between classes at the student union building.
VOA: special.2009.08.16
I was a first year student and happily minding my own business, getting ready to try to pick a summer job.
我当时是一年级,只关心自己的小生活,想好好准备暑假打个工。
to get a first down as it's called or second and third and fourth down.
去拿下所谓的第一个10码进攻,然后是第二个,第三个,第四个。
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