He can now concentrate on a project he'd originally put to oneside.
他现在能集中做他以前暂时搁置一边的一个项目了。
《柯林斯英汉双解大词典》
2
You've got to put more pressure ononeside than the other if you want to push that gas through the throttle, right? So this is where the time scale issue comes into play.