He would remain a virgin in order to prepare for and to maintain this incredibly important role as an epic poet.

他想保持自己的童贞,为了准备和保持作为史诗诗人这个无比重要的角色。

耶鲁公开课 - 弥尔顿课程节选

In order for life to proceed, you need to maintain a constant internal environment.

为了维持生命,人体的内环境需要保持稳定

耶鲁公开课 - 生物医学工程探索课程节选