preface with

I must preface my remarks with an apology.

讲话前，我必须先表示歉意。

I will preface what I am going to say with a few lines from Shakespeare

进入正题之前，我先引用莎士比亚的几句诗作为开场白。

Choosing fit picture as background picture in whole picture preface row, adopting picture matrix difference to do away with the object such as machine hull and ruler, then attaining picture with only seeds.

在整个图像序列中挑选合适的帧图像作为背景图像，运用图像矩阵差分去除排种器壳和标尺等对象，再将差分矩阵变换成只含种子的图像。

In the preface of this paper, the problem existing in the current financing mechanism of china's inland ports, that the main fund-raising-the port tied loan will meet a severe challenge with the promotion of the management system reform, is studied.

前言阐述了我国内河港口目前的投融资模式机制存在的问题，即随着内河港口管理体制改革的深化，内河港口主要筹资方式&港口专项贷款将遇到严峻的挑战。

I will preface what I am going to say with a few lines from Shakespeare...

进入正题之前，我先引用莎士比亚的几句诗作为开场白。

I will preface what I am going to say with a few lines from Shakespeare.

进入正题之前，我先引用莎士比亚的几句诗作为开场白。