1
a beam of + noun
用于描述光线。
A beam of sunlight entered the room.
一束阳光照进了房间。
梁；横梁
先理解核心含义，再看它在真实句子里的用法。
梁；横梁
a long heavy piece of wood, metal, or concrete used in building or as a support
A beam of sunlight entered the room.
一束阳光照进了房间。
任何长度远大于厚度、准备使用的木材或铁材。
Any large piece of timber or iron long in proportion to its thickness, and prepared for use.
沿窄束传播的信号,用于在黑暗或恶劣天气下引导飞行员
a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weather
建筑物中主要水平结构构件之一,通常为钢、木材或混凝土。
One of the principal horizontal structural members, usually of steel, timber, or concrete, of a building.
建筑中使用的长而厚的木材、金属或混凝土等构件
long thick piece of wood or metal or concrete, etc., used in construction
The sun's beam shone through the window.
太阳的光束透过窗户照射进来。
A laser beam cut through the metal.
激光束切开了金属。
The lighthouse sent out a bright beam of light.
灯塔发出明亮的光束。
用于描述光线。
A beam of sunlight entered the room.
一束阳光照进了房间。
用于描述建筑结构中的梁。
The beam of the old house is made of oak.
老房子的横梁是用橡木做的。
Not this
The ceiling is supported by many beam.
Use this
The ceiling is supported by many beams.
“Beam”是规则可数名词，复数形式为“beams”。中文“横梁”可单独表示单数或复数，但英语中需要明确使用复数形式。
Not this
A beam from light came through the window.
Use this
A beam of light came through the window.
英语中描述光线时使用固定搭配“a beam of light”，其中“of”表示“由……构成”，而不是用“from”表示来源。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
激光束
The laser beam cut through the metal easily.
激光束轻松切穿了金属。
钢梁
The workers installed a steel beam to support the roof.
工人们安装了一根钢梁来支撑屋顶。
平衡木
She performed a perfect routine on the balance beam.
她在平衡木上完成了一套完美的动作。
光束
A narrow beam of light shone through the crack.
一束狭窄的光线从裂缝中射进来。
正确轨道上
Our plan is on the beam and progressing well.
我们的计划在正确轨道上，进展顺利。
波束宽度
The radar has a narrow beam width for better accuracy.
雷达的波束宽度很窄，以提高精度。
不正确；偏离轨道
His answer was completely off beam.
他的回答完全错误。
正确；对路
Your analysis is right on the beam.
你的分析非常正确。
臀部宽大的（指人）；船体宽的（指船）
She was a little broad in the beam, but still attractive.
她臀部有点宽，但仍然很有魅力。
把我传送上去，斯科蒂。
In Star Trek, Captain Kirk often says, 'Beam me up, Scotty.'
在《星际迷航》中，柯克船长常说：“把我传送上去，斯科蒂。”
发长 /iː/ 音 (如 sea, tea)
Same pattern, same sound
Use beam naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
横梁（beam）和光束（beam）同词，可联想横梁上射下一束光。
建筑、工程、木工等场合。通常用于指房屋或桥梁的承重横梁，属于中性技术词汇。
可数名词，复数形式为beams
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.
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