This area was formerly within the sphere of influence of the US.

这一地区先前属于美国的势力范围。

《牛津词典》

Another way is to get to know people in your community, thereby expanding your sphere of influence.

另一个解决的办法，就是去认识你生活圈子里的人，由此扩展你的影响范围。

youdao

Meanness happened then too, but the sphere of influence was much smaller.

我们那时候也有欺凌弱者的事情，不过影响范围却小很多。

youdao

The 58-year-old Ghimpu and his pro-Western coalition, dubbed the 'Alliance for European Integration', seek closer ties with the European Union and want to take the former Soviet republic out of Russia's sphere of influence.

VOA: standard.2009.08.29

Critics fear it will dilute Ukraine's sovereignty and help return Ukraine to Moscow's sphere of influence.

BBC: Ukraine police clash with Kiev crowd over language law

One of these, he said, was "the 19th Century notion of the sphere of influence".

BBC: Biden pledges support for Georgia

In recent years, Iran has expanded its sphere of influence to strategic points around the region.

CENTERFORSECURITYPOLICY: Iran's Western enablers