push-and-pull

常见例句

• We sell good quality Forks, Clamp, Push and puller and other attachments.
  我们经营各种高品质的叉子，夹抱器，推拉器和其它属具。
• The relentless push and pull of coevolutionary life eventually brings into its game the abiotic stuff of the universe.
  共同进化生命的无情的相互推拉，最终将宇宙中的非生命物质带入它的把戏之中。
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