push-and-pull的用法和樣例：
例句
- We sell good quality Forks, Clamp, Push and puller and other attachments.
我們經(jīng)營(yíng)各種高品質(zhì)的叉子，夾抱器，推拉器和其它屬具。 - The relentless push and pull of coevolutionary life eventually brings into its game the abiotic stuff of the universe.
共同進(jìn)化生命的無(wú)情的相互推拉，最終將宇宙中的非生命物質(zhì)帶入它的把戲之中。
