一步的英文：
(single) step

参考例句：
  • one step at a time;Step by step
    一步一步地
  • Learning a foreign language is a step by step process.
    学习外语是一步一步的过程。
  • An important step forward
    向前迈进的重要一步
  • One must draw back in order to leap better.
    后退一步可以跳得更远。
  • Every question was a trap, a contrived progression towards a preconceived conclusion.
    每个问题都是一个陷阱，事先策划好了，一步一步达到早已作出的结论。
  • This was a crucial step in the development of primitive dance.
    这在原始舞蹈的发展进程中是至关重要的一步。
  • Oxaloacetate is formed in the last step of the citric acid cycle by the NAD+-dependent oxidation of L-malate.
    草酰乙酸在三羧酸循环的最后一步通过NAD+-依赖的L-苹果酸的氧化来合成。
  • Dance has been a loyal companion of mankind on his way toward higher civilizations.
    舞蹈与人类风雨同舟、悲欢与共，真诚地追随着人类前进道路上的每一步。
  • In general wet methods are further divided into regenerative and non-regenerative processes
    一般说来，湿法可进一步分为可再生法和不可再生法。
  • Her shopping had tired her and her basket had grown heavier with every step of the way home.
    去商店买东西把她搞得筋疲力尽;在回家的路上，她每走一步，就感到手里的篮子又重了一点。
single是什么意思：
adj. 单一的；个别的；单身的；单程的 n.单曲唱片；单程票；单打比赛
v.挑出，选出；击出一垒安打
  • They single out the biggest apple.
    他们挑出最大的苹果。
  • They play single this afternoon.
    他们今天下午进行单打比赛。
  • A single to London, please.
    劳驾，一张去伦敦的单程票。
  • single width bus bay
    单排巴士停车处
  • single-perforated grain
    单孔药柱
step是什么意思：
n. 脚步；步态，步伐；步骤；措施；阶段，等级；台阶，平台；舞步
v. 踩，踏；跨步，行走；跳舞；使成阶梯状
  • step by step welding
    跨步焊法
  • It is a step class.
    这是踏板操训练班。
  • They are not in step with the times.
    他们跟不上时代的步伐。
  • the execution of steps
    舞步表演
  • To work step by step is as good as riding in a carriage.
    安步当车

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