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on the mast
桅杆是可数名词，通常与定冠词连用。
The flag flies on the mast.
旗帜在桅杆上飘扬。
桅杆；旗杆；天线杆
先理解核心含义，再看它在真实句子里的用法。
桅杆；旗杆；天线杆
A tall, upright pole on a ship or boat that supports sails, or a similar tall support for flags, radio antennas, or other equipment.
The flag flies on the mast.
旗帜在桅杆上飘扬。
高而细的柱子或塔,通常向上变细,用于支撑船上的帆或观察平台、直升机的主旋翼、旗帜、泛光灯、气象仪器或通信设备,如天线,通常由拉索支撑(直升机除外)
A tall, slim post or tower, usually tapering upward, used to support, for example, sails or observation platforms on a ship, the main rotor of a helicopter, flags, floodlights, meteorological instruments, or communications equipment, such as an aerial, usually supported by guy-wires (except in the case of a helicopter).
森林树木的果实(如山毛榉、橡树、栗树、山核桃等),尤其是从树上掉落的,用作猪和其他动物的饲料
The fruit of forest-trees (beech, oak, chestnut, pecan, etc.), especially if having fallen from the tree, used as fodder for pigs and other animals.
支撑帆的垂直桅杆
a vertical spar for supporting sails
非司法惩罚；指挥官研究和处理其指挥下人员案件的纪律听证会
A non-judicial punishment ("NJP"); a disciplinary hearing under which a commanding officer studies and disposes of cases involving those under his command.
The sailor climbed the mast to fix the torn sail.
水手爬上桅杆修理撕裂的帆。
A flag fluttered from the top of the mast.
一面旗帜在桅杆顶上飘扬。
The storm snapped the mast of the wooden schooner.
暴风雨折断了木制纵帆船的桅杆。
桅杆是可数名词，通常与定冠词连用。
The flag flies on the mast.
旗帜在桅杆上飘扬。
The sailors raised the mast.
水手们升起了桅杆。
此义项为不可数名词，指橡子等林地面上的坚果。
The pigs feed on mast in the forest.
猪在森林里以树木坚果为食。
Not this
The ship has a tall mass on the deck.
Use this
The ship has a tall mast on the deck.
混淆了形近词 'mass'（大量）与 'mast'（桅杆）。'mast' 指船上支撑帆的垂直桅杆，而 'mass' 指物体的质量或大量。注意拼写差异：'mast' 以 'st' 结尾，而不是 'ss'。
Not this
He mast the sail to the boat.
Use this
He raised the mast and attached the sail to the boat.
误将名词 'mast' 用作动词。英语中 'mast' 是名词，意为桅杆，不能直接作谓语。正确表达应使用动词短语如 'raise the mast' 或 'set up the mast'，并搭配相应动作。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
船的桅杆
The sailor climbed up the ship's mast to check the sails.
水手爬上船的桅杆检查船帆。
桅杆座
The mast step must be securely fastened to the deck.
桅杆座必须牢固地固定在甲板上。
桅杆高度
The bridge has a clearance that is lower than the mast height of the yacht.
这座桥的净高低于游艇的桅杆高度。
桅杆索具
Regular maintenance of the mast rigging is essential for safety.
定期维护桅杆索具对安全至关重要。
桅杆净高
Check the mast clearance before passing under the bridge.
在通过桥下之前检查桅杆净高。
桅杆脚
The mast foot sits in a socket on the deck.
桅杆脚位于甲板上的插座内。
表明立场；坚持到底
He nailed his colors to the mast by publicly supporting the controversial policy.
他通过公开支持这项有争议的政策表明了自己的立场。
作为普通水手
He served before the mast for five years before becoming an officer.
他在成为军官前当了五年的普通水手。
降半旗（表示哀悼）
The flags were at half-mast to honor the victims.
降半旗以悼念遇难者。
然后他把我手脚捆绑在桅杆上，后来他自己爬上来把我牢牢系住，于是船继续航行。
In Homer's Odyssey, Odysseus has himself tied to the mast to resist the Sirens' song.
在荷马的《奥德赛》中，奥德修斯让人把自己绑在桅杆上以抵抗塞壬的歌声。
桅杆断裂，船帆撕裂，遇难者被抛入海中。
Samuel Taylor Coleridge's poem 'The Rime of the Ancient Mariner' describes a storm that splits the mast.
塞缪尔·泰勒·柯勒律治的诗《古舟子咏》描述了一场风暴劈开了桅杆。
Use mast naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象桅杆（mast）是一根高高的木柱，发音类似“木斯特”，即“木头做的桅杆”
桅杆义通常用于航海或文学语境；坚果义多用于林业或饲料相关语境。
Words like fast, last, past, and cast share the same /æst/ ending as mast, but must (/mʌst/) and most (/moʊst/) only look similar and sound different.
Dictionary facts from AI_FALLBACK, ECDICT, WIKTIONARY.