Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

熟悉计划的四名消息人士说，国际开发署只有294名员工可以保留工作，其中只有12名在非洲局，八名在亚洲局。开发署的万多名雇员三分之二在海外工作。 曾担任美国国际开发署署长六年多的阿特伍德（J. Brian ...

Scientists researching Alpine glaciers store ice in Antarctica. By analysing air bubbles in the ice they may be able to predict the future ...

See? “By” originally means “bye” or byway. That’s why, in fact, some people still spell “by the by” as “by the bye”. By the way, “that is by the by or bye” in this sense (secondary) is an idiom that ...