Something or someone that is foreign comes from or relates to a country that is not your own.
overseas , international
She was on her first foreign holiday without her parents.
她第一次在没有父母陪伴的情况下到国外度假。
a foreign language.
一门外语。
It is the largest ever foreign investment in the Bolivian mining sector.
这是玻利维亚矿业迄今最大的外国投资。
In politics and journalism, foreign is used to describe people, jobs, and activities relating to countries that are not the country of the person or government concerned.
the German foreign minister.
德国外交部长。
I am the foreign correspondent in Washington of La Tribuna newspaper of Honduras.
我是洪都拉斯《论坛报》驻华盛顿的记者。
the effects of US foreign policy.
美国对外政策的影响。
A foreign object is something that has got into something else, usually by accident, and should not be there.
The patient's immune system would reject the transplanted organ as a foreign object.
该病人的免疫系统会对移植器官产生异质排斥反应。