How long have you been living in this country?
你在这个国家居住多久啦？
She didn't know what life in a foreign country would be like.
她不知道外国的'生活会是什么样。
It's a free country; I'll say what I like!
这是个自由的国家，我想说什么就说什么！
This operation has never been performed in this country.
这个国家从未做过这种手术。
The university is ranked number one in the country for engineering.
在工程学领域上，这所大学位居本国第一。