扩展径的英文：
expansion paths

expansion是什么意思：
n. 扩大，膨胀；扩张物
  • It's the expansion of a river.
    这是河流的延伸部分。
  • This is nothing but the binomial expansion.
    这不过是二项展开式。
  • They have an expansive grassy play area.
    他们有一片广阔的游乐草地。
  • They have played an expansive style of rugby.
    他们采用向外展开打法打了一场橄榄球。
  • That was a vast expanse of grassland.
    那曾是一片广阔的草原。
paths是什么意思：
n. 小路；路线；行动计划
  • The path of duty is the path of safety
    尽职的路是安全的路
  • strike one's path
    朝...方向进; 取道前进
  • A route or path across or over.
    横向路横越或横跨的路线或道路
  • The path to glory is always rugged.
    通向光荣的道路常常是坎坷不平的。
  • The path down to evil is easy.
    人很容易堕入罪恶的道路。

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