美国新一届政府宣布对加拿大、墨西哥和中国加征关税。欧盟也将面临同样问题。加征关税等保护主义手段往往会引发全球保护主义浪潮，加剧经济萧条局面，重挫全球贸易。 On February 1, the new U.S. administration ...

热解气相色谱-质谱分析显示，2016年和2024年的人体肾脏、肝脏和脑组织样本中存在微塑料和纳米塑料，其中大脑中的比例更高。

Six of the 11 primary S&P 500 sectors ended in red, with technology and consumer discretionary leading the laggards by losing 1.80 percent and 1.35 percent, respectively. Meanwhile, consumer staples ...

US President Donald Trump said on Monday that the tariffs on Canada announced on Saturday "will be paused for a 30 day period ...