英语语法分析

This aircraft was equipped with inflated pontoons to permit alighting on the water.

这架飞机是装有充气浮筒，以允许在水面上下车。

In 1961, with the help pf steel cables and huge inflatable pontoons, the Vasa rose again from the deep.

1961年，借助钢缆和巨大的打捞充气浮筒，瓦萨号才得以重见天日。

The floating design, which relies on concrete pontoons that are anchored by underwater weights, was the perfect solution.

浮桥设计是最佳方案，它利用的是混凝土浮船，而浮船则由水下重物固定。