| 单词 | pontoon bridge |
| 释义 | Definition of pontoon bridge in English:pontoon bridgenoun
OriginMid 18th century; earliest use found in John Muller (1699–1784), mathematician and engineer. Definition of pontoon bridge in US English:pontoon bridgenoun
OriginMid 18th century; earliest use found in John Muller (1699–1784), mathematician and engineer. |
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