He entered the country illegally.

他通过非法途径进入了这个国家。

《牛津词典》

They had entered the country and had applied for permanent residence.

他们已进入了那个国家，并已经申请了永久居住权。

《柯林斯英汉双解大词典》

He first entered the country on a six-month visa, and was given a further extension of six months.

他最初凭有效期为6个月的签证进入这个国家，之后又得到了6个月的续签。

《柯林斯英汉双解大词典》

It honors all immigrants to the United States no matter where they entered the country.

VOA: special.2009.06.29

Leyda Lopez came to Sunday's rally with her mother who entered the country illegally from Equador nearly two decades ago.

VOA: standard.2010.03.21

Of that number,about half are thought to have entered the country illegally,with the rest overstaying their visas.

VOA: standard.2009.09.01

The court held that they were "unlawful combatants" who had entered the country secretly like spies.

BBC: Q&A: Rights versus security

Algerian authorities believe the attackers entered the country from Libya, a senior Algerian security official said.

WSJ: Britons Warned to Leave Benghazi

One allowed immigrants who entered the country illegally to remain during a waiver process.

FORBES: President Obama's Executive Power End Run Around The Constitution