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bough of [tree]
bough 通常指树的大枝，可说 a bough of ...。
A bough of the oak snapped in the storm.
暴风雨中橡树的一根大树枝折断了。
粗大的树枝
boughs — plural of bough
先理解核心含义，再看它在真实句子里的用法。
粗大的树枝
a large branch of a tree
A bough of the oak snapped in the storm.
暴风雨中橡树的一根大树枝折断了。
树枝,通常指直接连接树干的主枝。
A tree-branch, usually a primary one directly attached to the trunk.
The cat sat on a low bough and watched the garden.
猫坐在一根低垂的大树枝上，看着花园。
After the storm, several boughs lay scattered across the lawn.
暴风雨过后，几根大树枝散落在草坪上。
They hung the swing from the strongest bough of the oak tree.
他们把秋千挂在橡树最结实的那根大树枝上。
bough 通常指树的大枝，可说 a bough of ...。
A bough of the oak snapped in the storm.
暴风雨中橡树的一根大树枝折断了。
常用 strong、low、heavy 等形容词修饰 bough。
She leaned against a thick bough and read.
她靠在一根粗大的树枝上读书。
表示“在树枝上”用介词 on。
A pigeon perched on a bough.
一只鸽子停歇在一根大树枝上。
Not this
The tree has many bough.
Use this
The tree has many boughs.
bough 是可数名词，须用复数形式 boughs；汉语名词没有单复数变化，学习者常漏掉 -s。many 后面必须接复数可数名词。
Not this
He cut a bow from the tree.
Use this
He cut a bough from the tree.
bough 与 bow 同音，但 bow 表示鞠躬、船首或蝴蝶结，不能指树枝；要表示大树枝必须拼作 bough。
Not this
The vase needs a small bough.
Use this
The vase needs a small branch.
bough 指粗大的树枝，小而普通的分枝要用 branch；汉语都叫树枝，但二者大小和语域不同。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
冬青树枝
They decorated the hall with boughs of holly.
他们用冬青树枝装饰大厅。
粗大的树枝
She sat on a thick bough of the oak tree.
她坐在橡树粗大的树枝上。
当树枝折断时
When the bough breaks, the cradle will fall.
当树枝折断时，摇篮就会掉下来。
摇曳的树枝
The swaying boughs cast shadows on the grass.
摇曳的树枝在草地上投下阴影。
垂下的树枝
He ducked under an overhanging bough.
他低头躲过一根垂下的树枝。
当支撑不住时，一切就会垮掉；栽跟头
The company seemed stable, but when the bough broke, it collapsed overnight.
这家公司看起来稳定，但支撑点一断，一夜之间就垮了。
冬青树枝（常指圣诞装饰）
Every Christmas, we deck the halls with boughs of holly.
每年圣诞节，我们都会用冬青树枝装饰大厅。
用冬青树枝装饰大厅，啦啦啦啦啦，啦啦啦啦啦。
The line "Deck the halls with boughs of holly" opens a well-known Christmas carol.
歌词「用冬青树枝装饰大厅」是一首著名圣诞颂歌的开头。
当大树枝折断，摇篮就会坠落，宝宝和摇篮会一起摔下来。
This warning about a breaking bough comes from the traditional lullaby "Rock-a-bye Baby."
这个关于树枝折断的警示出自传统摇篮曲《摇啊摇，宝宝》。
Use boughs naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
bough 与 cow 同韵 (/aʊ/)，想象一头牛(cow)站在树下仰头啃大树枝(bough)。
语域：formal 常见场景：poetry、literary prose、formal writing 通常用于文学或诗歌中，口语中较少用，比较常见于书面描述。
bough rhymes with plough, cow, how, now, and brow: they all share the stressed vowel /aʊ/. Beware the spelling -ough: in common words like through (/θruː/), though (/ðoʊ/), rough (/rʌf/), and cough (/kɒf/), it is not pronounced /aʊ/. Drought (/draʊt/) keeps the /aʊ/ vowel but adds /t/, so it is not a perfect rhyme.
Dictionary facts from ECDICT, WIKTIONARY.