step in
英
/step ɪn/
  
美
/step ɪn/
 
介入，干预，插手（棘手问题）
柯林斯词典
step in
1
PHRASAL VERB 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.
If no agreement was reached, the army would step in...

如果无法达成协议，军队将会介入。

英英释义
verb

1
act as a substitute
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
Why did the U.S. not intervene earlier in WW II?
Synonym:
interveneinterfereinterpose
数据来源：WordNet

双语例句
全部 介入 干预 插手
1
The team coach was forced to step in to stop the two athletes from coming to blows. 

运动队教练不得不介入，才使两个运动员没有动起手来。

《牛津高阶英汉双解词典》

2
If no agreement was reached, the army would step in 

如果无法达成协议，军队将会介入。

《柯林斯高阶英汉双解学习词典》

3
This won't solve the problem but it's a step in the right direction. 

这虽不能解决问题，却是朝正确方向迈出的一步。

《牛津高阶英汉双解词典》

4
It was unquestionably a step in the right direction. 

这无疑是朝正确方向迈出的一步。

《牛津高阶英汉双解词典》

5
It's only a small improvement, but at least it's a step in the right direction. 

虽然这只是小小的改进，但至少是朝正确方向迈出的一步。

《牛津高阶英汉双解词典》