UK study suggests phone bans may not be effective 英国研究指出校园手机禁令 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
Asteroid contains building blocks of life, say scientists 科学家认为一小行星含有 ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...
每日早报丨20250310
消息：3月8日，国务院关税税则委员会发布公告，自2025年3月20日起，对原产于加拿大的部分进口商品加征关税，其中对猪肉加征25%关税。我国猪肉对外依赖度低，自美国进口量占国内消费不足1%。去年自加拿大进口量约为美国的一半，影响规模小，但较对美国加税 ...