Water park is the English translation for 水上乐园. The term comes from the combination of the words "water" and "park," and is used to refer to a type of amusement park that features water-based attractions such as pools, water slides, and water rides. Here are some example sentences and their translations:

"I took my kids to the water park last weekend and they had a blast!" (我上个周末带孩子去了水上乐园，他们玩的非常开心！)

"The water park is a great place to cool off on a hot summer day." (水上乐园是在炎热的夏日里降温的好地方。)

"We spent the whole day at the water park, going on all the water rides and swimming in the pools." (我们整天都在水上乐园度过，去了所有的水上游乐设施，在游泳池里游泳。)