He heard a step outside.

他听到外头有脚步声。

《新英汉大辞典》

youdao

I had to step outside for a breath of fresh air.

我得到外面去透口气。

《柯林斯英汉双解大词典》

"I think that the proposal that the President made in Geneva to have Iran withdraw its enriched uranium, or a good portion of it, outside Iran is a positive first step in that direction and I support and appreciate the President's ongoing efforts to unite the international community to address the challenge of Iran's attempts to become a nuclear military power,"

VOA: standard.2009.10.30

Step outside to enjoy the home's waterfront location, which overlooks the Hyannis Harbor and Nantucket Sound.

FORBES: A Kennedy Hyannisport Haven

James Crowley, appeared at his steps and asked him to step outside, the lawyer said.

CNN: Charge against Harvard professor dropped

It took three years to summon the courage to step outside my comfort zone.

FORBES: Achieving Your Goals Doesn't Always Happen Overnight