Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
SEOUL, Jan. 26 (Xinhua) -- The Democratic People's Republic of Korea (DPRK) conducted a sea-to-surface strategic cruise missile test on Saturday under the supervision of its top leader to beef up its ...
The best way to find out is simply to talk to them.找出答案的最佳方法就是与他们交谈。 In the course of discussion, you'll be exposed to counter-arguments and rebuttals.在讨论的过程中,你会接触到反面观点和驳斥。