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pontoon + noun
名词 pontoon 可作定语修饰另一名词，构成复合名词，如 pontoon bridge（浮桥）、pontoon dock（浮码头）。
The soldiers built a pontoon bridge overnight.
士兵们一夜之间建起了一座浮桥。
浮舟；浮筒；浮码头
先理解核心含义，再看它在真实句子里的用法。
浮舟；浮筒；浮码头
a floating structure used as a dock or to support a bridge
The soldiers built a pontoon bridge overnight.
士兵们一夜之间建起了一座浮桥。
平底船或其他浮式结构,用作临时桥梁、码头或登岸平台的浮力支撑
A flat-bottomed boat or other floating structure used as a buoyant support for a temporary bridge, dock or landing stage.
一种纸牌游戏,目标是使牌面点数之和达到或接近21点但不超过21点
A card game in which the object is to obtain cards whose value adds up to, or nearly to, 21 but not exceed it.
(航海)作为码头或支撑桥梁的浮动结构(如平底船)
(nautical) a floating structure (as a flat-bottomed boat) that serves as a dock or to support a bridge
浮桥
A bridge with floating supports.
The workers tied the boat to the pontoon before unloading the supplies.
工人们在卸货前把船系在浮码头上。
A pontoon bridge allowed the army to cross the river quickly.
一座浮桥让部队迅速渡河。
The old pontoon was covered with moss and looked very unstable.
旧浮筒上长满了青苔，看起来很不稳固。
名词 pontoon 可作定语修饰另一名词，构成复合名词，如 pontoon bridge（浮桥）、pontoon dock（浮码头）。
The soldiers built a pontoon bridge overnight.
士兵们一夜之间建起了一座浮桥。
动词 pontoon 表示“在（水域）上架浮桥”，为及物动词，后接地点宾语。
The engineers are pontooning the river to speed up the crossing.
工程师们正在河上架设浮桥以加快渡河速度。
Not this
The bridge was built on two pontoon.
Use this
The bridge was built on two pontoons.
pontoon 是可数名词，与数字 two 连用时须用复数 pontoons。汉语里的“浮筒”没有复数形式，中文学习者容易漏掉 -s。
Not this
The empty bottles pontoon on the water.
Use this
The empty bottles float on the water.
pontoon 作动词时意为“架浮桥于”，不是“漂浮”；汉语“浮”对应英语 float，此处应改用 float 表示在水面上漂浮。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
浮桥
The army built a pontoon bridge across the river overnight.
军队在一夜之间在河上架起了一座浮桥。
浮筒船
We spent the afternoon on a pontoon boat.
我们下午在浮筒船上度过。
浮动码头
The pontoon dock rises and falls with the tide.
浮动码头随潮水涨落。
充气浮筒
The temporary pier is supported by inflatable pontoons.
这座临时码头由充气浮筒支撑。
水上飞机浮筒
The pilot checked the seaplane's pontoons for leaks.
飞行员检查了水上飞机的浮筒是否有漏损。
我们就在浮筒船上放松一下。
We rented a pontoon and spent the afternoon on the lake.
我们租了一艘浮筒船，在湖上度过了一个下午。
发长 /uː/ 音 (如 food, boot)
Use pontoon naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
将pontoon想成漂在水面的大圆筒，成排托起浮桥；浮舟、浮码头都是它。
语域：mixed 常见场景：nautical、bridge engineering、dock construction pontoon 作名词时多用于航海、桥梁工程等语境，指浮舟、浮筒或浮码头等浮动结构；属于技术性较强的用词，正式说明中比较常见。
这些词都以 -oon 结尾，重音在最后一个音节，发 /uːn/，与 pontoon 的 -toon 押韵。注意不要被拼写迷惑：carton /ˈkɑrtən/ 与 cartoon 拼写相近但发音不同；flood /flʌd/ 和 good /ɡʊd/ 中的 oo 也发不同的音。
Dictionary facts from ECDICT, WIKTIONARY.
Watch the sound change