非洲企鹅每年需花约 21 天换羽,期间必须留在陆地禁食,因此换羽前需积累足够脂肪储备。但研究发现,2004 年以来除三年外,南非西海岸关键沙丁鱼种群生物量仅为峰值的 ...
一项发布在《内科学年鉴》(Annals of Internal Medicine)上的新研究发现,每天一次长距离步行比多次短距离步行更有利于心脏健康,特别是对锻炼量较少的人来说。 The study looked at more than 33,000 adults aged 40 to 79 in the UK who walked fewer than 8,000 steps a day.
The Chinese Joss House Museum -- rebuilt in 1990 after the original burned down in 1922 -- tells the story of a once-thriving Chinese community that helped shape the development in America's wild West ...
Allen指出,火灾造成的财产损失已得到有效控制,范围相对有限,仅有少数棚屋和附属建筑受损。他称赞消防队及时保护了Waggrakine Primary School,火灾共烧毁约130公顷土地。 DFES 发言人警告,居民正处于火灾威胁中,必须立即采取行动。若路线安全,应迅速前往更安全的地点,如家人或朋友住所;切勿拖延,最后一分钟才撤离可能危及生命。如果无法撤离,应做好在家避难准备。
Archaeologists have discovered 45 tombs from various dynasties and periods in Sanmenxia, Central China's Henan province, including the Warring States Period (475-221 BC), the Northern Dynasties (386-5 ...