一级的英文：
stair

参考例句：
  • "Step by step, the ladder is ascended"
    梯子是一级级爬上去的
  • Primary underwriters of government securities.
    国债一级自营商
  • She was awarded a first-class degree in English.
    她获得一级优等英语学位。
  • He decided to appeal to a higher court.
    他决定向上一级法院上诉。
  • Screening and sedimentation are the two types of primary treatment used for textile wastes
    筛滤和沉淀是用于纺织废水的两种一级处理方法。
  • In this treatise, we emphasize first-order splines
    在这一处理中，我们强调一级样条。
  • Wang is not. A magnetic resonance imaging exam on his right leg revealed a Grade1 hamstring pull Saturday morning.
    王建民不是。星期六早上的核磁共振检查后显示他的右小腿肌腱是一级拉伤。
  • The lubricant specialist Castrol is the new technical sponsor of the Williams Renault Formula One team.
    润滑油专业制造商嘉实多将是威廉姆斯·雷诺特一级方程式车队的新技术赞助商。
  • Well, we send all the first-class mail by plane to the East Coast, so you don't need an airmail stamp.
    是这样，我们寄到东海岸的一级邮件全部用飞机传递，所以你不需要贴航空邮票。
  • Hakkinen of Finland had his first test in the 1996 Mclaren Formula One Car at the Estoril track in Portugal 0n Thursday.
    星期四,芬兰车手哈基宁在葡萄牙埃斯图里尔车道进行他的1996年麦克拉伦一级方程式赛车首次试车练习。
stair是什么意思：
n. 楼梯，阶梯
  • She has trouble navigating the stair.
    她上下台阶有困难。
  • They went clumping up the stairs.
    他们拖着沉重的脚步走上楼。
  • She pegged down the stairs.
    她急忙下楼。
  • There was a woman mopping the stairs.
    一个女人在拖楼梯。
  • She was standing at the top of the stairs.
    她站在楼梯的顶端。

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