例句 /

It is the happiest country in the world while Burundi in Africa is the most unhappy, according to a report by a British scientist.

It is the happiest country in the world while Burundi in Africa is the most unhappy, according to a report by a British scientist.

据一位英国科学家的报告指出,丹麦是全世界最快乐的国家,非洲的蒲隆地则是最不快乐。