先决条件

Sound sleep presupposes a mind at ease.

充足睡眠需以心情轻松为先决件。

It is a prerequisite of entry to the profession that you pass the exams.

做这一行先决件是要通过了有试。

Success presupposes diligence.

勤勉是功先决件。

No preconditions should be imposed.

应有[强加]先决件。