The simplest reactions start with just one substance and take one step.

最简单的反应只有一种起始物，进行一步反应。

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Then take one small step or do one tiny task, followed by another and another.

然后迈出一小步，或者完成一项小任务，一项接着一项来。

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Some teams may take on more than one step at a time; others may run a few projects based on one step and then take the next step.

一些团队每次不止使用一个步骤；其他的团队可能在一个步骤上运作了几个项目，然后才执行下一个步骤。

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"The most important step is one they're only beginning to take now and that's to prohibit the import and sale of timber which was illegally sourced in the country of origin."

VOA: standard.2010.07.28

There are going to be occasions where you take one step forward and two steps back -- sometimes you take two steps forward and one step back.

WHITEHOUSE: President Obama and Prime Minister Tusk Press Conference

Now two researchers hope to revive Google hacking in that original sense, and take it one step further.

FORBES: Researchers Will Turn Google And Bing Into Web Bug Warning System

James Bailey, an organizational behaviorist and professor of leadership at George Washington University, argues that we often take this one step further and apply what is called the "halo effect" to these stars.

FORBES: Magazine Article