0 an introduction at the beginning of a book explaining its purpose, thanking people who helped the author, etc. -- 序言，前言
1 If you preface your words or actions with something else, you say or do this other thing first. -- 為…寫序言；作為…的開端（或序幕）
Each work is prefaced by a descriptive note and concludes with an author's note. 每一篇作品都以說明性文字作開端，以作者自己的批註為結尾。
I should like to preface my response with the following observation. 我想用以下評論作為我回應的開頭。
The prefaces to the albums explicitly spell out their intended administrative usefulness.
A lengthy contextual statement introduces each section, with individual documents being prefaced by a brief, though insightful, narrative.
Each section is prefaced by a brief introduction providing the theoretical background informing the choice of texts.
Here, phrases built from precipitous eight-note f igures alternate with melodic dyads (displaced as ninths or sevenths) prefacing abrasive chords.
The prefaces also construct the authority of the translation by commenting upon the work of translation.
All these prefaces comment upon the work of translation itself, reassuring the reader that the translator knows his art and that his motives are sound.
In this way, participants can maximally load a turn to include prefaces, mitigations, and accounts prior to the declination component, thereby heightening its projectability.
Answers to why-type questions may be prefaced by because, which identifies what follows as an explanation fitted to the question.
