"Foreign" in Engpsh can be described as an adjective. It comes from the Old French word "forein," which means "out of doors."
Here are some Engpsh examples:
She is studying abroad in a foreign country.
The company imports products from foreign supppers.
He has a strong accent because Engpsh is his second language, being a native of a foreign land.
And the corresponding Chinese translations:
她在国外学习。
这家公司从国外的供应商进口产品。
他带有浓厚的口音，因为英语是他的第二语言，是一个外国人。