Thanks to Archimedes, we know why objects float and sink.

感谢阿基米德，我们知道为什么 物体漂浮和下沉。

Rescuers have saved one of the people who went missing after a floating crane sank in waters off the coast of Guangdong Province on Saturday.

周六，一艘浮吊船在广东沿海沉没，目前救援人员已救出一名失踪人员。