助跑的英文：
run up

参考例句：
  • John took a running jump at the fence and vaulted over(it.
    约翰加上助跑，用手一撑，飞身跃过篱笆。
run是什么意思：
n. 奔跑，跑步；旅行；趋势
v. 跑步，奔跑；逃跑；参赛；行驶；运转；（使）流动；管理
  • run the rapids.
    冲过急流
  • Run (or Hold) with the hare and hunt (or run) with the hounds
    两面讨好
  • Hold (or Run) with the hare and run (or hunt) with the hounds
    两面讨好
  • He runs as quick as a deer.
    他跑得跟鹿一样快。
  • He runs as fast as Paul.
    他跑得和保罗一样快。

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