When they reached the sea floor and wanted to rise again, they simply let of the iron pellets.
当他们到达海底然后想要再升起来的时候，他们只要放开铁球就可以。
2
At the end of his walk down Nanjing Road, Chen heads into the workers' "dormitory" -plywood rooms on the third floorof an unfinished high-rise.
走到南京路尽头，陈钻进他的“工人宿舍”——一还没完成的大厦三层上胶合板隔出的简陋房间。
3
It is estimated that roughly half of the world's highest seamounts-areas that rise from the ocean floor and are particularly rich in Marine life-are also found in the deep ocean.