【简答题】If you' re feeling stressed, rather than wallow (沉迷) in watching television, try looking out of the window, with a US study finding scenes of nature can ease off minor stress levels. Researchers at th...
【简答题】When a Swedish ship that sank(沉) in 1628 was recovered from the port of Stockholm, historians and scientists were overjoyed with the chance to examine the remains of the past. The ship construction sh...