first off的中文是什么请问first off 是不是没这个词

马上,立刻
例句 Sentences
Jack led off the first inning.
杰克在第一局中第一个击球.
She walked off with first prize.
她轻易赢得了一等奖.
You'd better cool off first.
你最好先冷静下来.
Which of you should tee off first?
你们哪位先开球?
Get this letter off by the first post.
把这一封信交第一班邮递寄出去.