At the first look search and replace seems to be a good approach to start, but the names in a program are always in a context, which is very important to understand.

起先，查找并替换看起来是个不错的开始，但是程序中的名字通常是处于一个上下文中的，理解这一点非常重要。

youdao

At first sight, it may look like a generous offer, but always read the small print.

乍一看，对方给出的条件好像很优厚，但任何时候都不要小看那些小号字印刷的附加条款。

《牛津词典》

First, let's look at a breakdown of the costs.

我们首先看一下成本的详细数字。

《牛津词典》

Today look back at the first flights of the Apollo program designed to land humans on the moon.

VOA: special.2009.07.08

When you look at a food label like this, first it shows you the number of servings on containers.

这是一个食品标签的样例,首先可以了解到整个包装内所含食物份数

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So the first parable that we have to look at is the one that without question instilled the most anxiety in Milton, and that's the parable of the talents from Matthew 25.

我们要看的第一个寓言,毫无疑问,就是关于弥尔顿最为焦虑的，问题的马修25中关于天资的寓言。

耶鲁公开课 - 弥尔顿课程节选

On the showfloor here at Pepcom, the company was able to give us a first look at the Ascend W1: it's first entry for the Windows Phone 8 space.

ENGADGET

As I enter the store, I look outside in the shrubs, the dumpster, and I look at the first impression that customers get.

FORBES: For Top CEOs, Culture Drives Value Creation

The following exclusive look at the first few pages of the story contains spoilers, as well as artwork which some might find disturbing.

CNN: Joker's next move will shock Bat-fans