step in

走进； 介入； 干预； 伸脚穿入

It was unquestionably a step in the right direction.(这无疑是朝正确方向迈出的一步。)

Getting behind the wheel of a car can be an exciting new step in a teen's life.(在青少年的生活中，开车是一件令人兴奋的新事情。)

The most difficult step in programming values will be deciding exactly what we believe is moral.(在确立价值观的过程中，最困难的一步将是确定我们所谓的道德标准。)

Today's hearing was just the first step in the legislative process.(今天的听证会仅仅是立法程序的第一步。)

He said to Miles, "Step in there a moment, good sir, and wait till I bring you word."(他对迈尔斯说：“进去一会儿，好先生，等我给你带信。”)

Perhaps it is a step in the right direction.(也许这是朝着正确方向迈出的一步。)

The first step in the process is to get the raw materials.(这个过程的第一步是获得原材料。)

Anyone can understand every step in the reasoning.(任何人都能理解推理的每一步。)

What's the first step in awakening senses？(唤醒感官的第一步是什么？)

Practice is a necessary step in learning and it will benefit the kids for a life time.(练习是学习的必要步骤，它会使孩子受益终生。)

verb

1. act as a substitute

e.g. She stood in for the soprano who suffered from a cold

Synonym: substitutedeputizedeputise

2. get involved, so as to alter or hinder an action, or through force or threat of force

e.g. Why did the U.S. not intervene earlier in WW II?

Synonym: interveneinterfereinterpose

1. 介入，干预，插手(棘手问题)
If you step in, you get involved in a difficult situation because you think you can or should help with it.

e.g. If no agreement was reached, the army would step in...
如果无法达成协议，军队将会介入。
e.g. There are circumstances in which the State must step in to protect children.
有些情况下，国家必须出面保护儿童。