this swimming pool is not twice as wide as that one is long怎么翻译

问题描述:

this swimming pool is not twice as wide as that one is long怎么翻译

后面那个is long让我很费解
我猜可能是这个意思:
这个游泳池的宽不到那个游泳池的长的两倍.
不一定准……