precondition

先决条件、前提

A ceasefire is a precondition for any serious peace talks.

停火是任何实质和谈的先决条件。

预先制约、使先入为主常用被动

Children are preconditioned by advertising to want these toys.

孩子受广告预先制约，才会想要这些玩具。

事先处理、预先调理

The steel must be preconditioned before it is welded.

钢材在焊接前必须先做事先处理。