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.

总之，想写出有影响力、全球认可的论文的科学家们很有可能需要用英语发表论文，这意味着他们同样可能不得不参加英语会议、读英语论文，并用英语进行讨论。 派生 attendant [əˈtendənt] ① n. 服务员；侍从，随从 ② adj.

Guangdong, the province with the largest economy, is aiming for growth of around 5 percent, which is consistent with the target set last year. The southern province’s GDP is expected to rank first in ...

On January 8, the Hurun Research Institute released the Hurun Future Unicorns – Global Gazelles Index 2024, a list of the world's start-ups founded in the 2000s but not yet listed on a public exchange ...