假如钢船是完全实心的，它就会沉入水中。
If a steel ship were solid throughout, it would sink into water.
如果钢比水重，为什么船能在海上漂浮？
If steel is heavier than water, why are ships able to float on the sea?
如果钢比水重，为什么船能在海上漂起来。
If steel is heavier than water, why are ships able to float on the sea.
如果钢比水重，为什么船能在海上漂起来。
If steel is heavier than water, why are ships able to float on the sea.
应用推荐