pontoon crane floating crane

例句：

1. 1.The pontoon was a popular choice for recreational boats during the summer months.
   在夏季，浮筒船是受欢迎的休闲船只选择。
2. 2.The pontoon bridge was designed to accommodate large vessels and provide easy access to the river.
   浮桥设计用来容纳大型船只并方便进入河流。
3. 3.The pontoon boat was used as a floating platform for tourists to take pictures of the scenic area.
   浮筒船被用作游客拍照的浮动平台，以欣赏风景名胜区。