泳池的奧秘
2007-12-31 00:00:00丁當(dāng)
數(shù)學(xué)大王·趣味邏輯 2007年8期
In hot， summer， it' s very good to have a good swim-ming in the pool. But， do you know what， are the dimensions of a standard swimming pool for the Olympic Games?
In hot， summer， it' s very good to have a good swim-ming in the pool. But， do you know what， are the dimensions of a standard swimming pool for the Olympic Games?
