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the cleavage of [noun]
多用于化学或生物学，表示分子或细胞等的分裂或断裂，此义下常作不可数名词。
The cleavage of the chemical bond released energy.
这个化学键的断裂释放了能量。
乳沟
cleavages — plural of cleavage
先理解核心含义，再看它在真实句子里的用法。
乳沟
the line formed by a groove between two parts, especially between a woman's breasts
The cleavage of the chemical bond released energy.
这个化学键的断裂释放了能量。
劈开的行为或被劈开的状态。
The act of cleaving or the state of being cleft.
女性乳房之间的凹陷或分离,尤指低领口露出的部分。
The hollow or separation between a woman's breasts, especially as revealed by a low neckline.
身体两个部位(如臀部或脚趾)之间的类似分离。
Any similar separation between two body parts, such as the buttocks or toes.
细胞在有丝分裂后反复分裂成子细胞。
The repeated division of a cell into daughter cells after mitosis.
The new law has created a deep cleavage between the two communities.
新法律在两个社区之间造成了深刻的分裂。
Social cleavages such as religion and class often shape voting behaviour.
宗教和阶级等社会分裂常常影响投票行为。
Their arguments exposed a cleavage in the family that no one had noticed before.
他们的争吵暴露出家中先前无人察觉的分歧。
多用于化学或生物学，表示分子或细胞等的分裂或断裂，此义下常作不可数名词。
The cleavage of the chemical bond released energy.
这个化学键的断裂释放了能量。
此义指抽象的分裂或分歧，常用于政治或社会群体。
There is a growing cleavage in the party between moderates and radicals.
党内温和派与激进派之间的分歧日益扩大。
此义也指女性乳沟；口语中常说 "show some cleavage"，通常不必再加 between her breasts。
The cleavage between the two halves of the stone was clearly visible.
石头两半之间的裂缝清晰可见。
Not this
She has a beautiful cleavage.
Use this
She has beautiful cleavage.
指女性胸部之间的乳沟时，cleavage 是不可数名词，不能加不定冠词 a；直接用 have cleavage 表示“有乳沟”才正确。
Not this
The zygote cleavages into two cells.
Use this
The zygote undergoes cleavage into two cells.
cleavage 是名词，不能当作动词使用并加上第三人称单数词尾 -s；表示“卵裂”要用 undergo cleavage，而不是把 cleavages 当成动词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
深乳沟
She wore a low-cut top that revealed deep cleavage.
她穿着一件低胸上衣，露出深深的乳沟。
政治分裂
The scandal exposed a political cleavage within the government.
这起丑闻暴露了政府内部的政治分裂。
解理面
The mineral splits along a smooth cleavage plane.
这种矿物沿光滑的解理面裂开。
胚胎卵裂
Embryonic cleavage begins soon after the egg is fertilized.
胚胎卵裂在卵子受精后不久开始。
化学键断裂
The enzyme accelerates bond cleavage in the molecule.
该酶加速分子内的化学键断裂。
Use cleavages naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：联想 cleave（劈开）——岩石被劈开的裂缝叫 cleavage，衣领间那道缝也叫 cleavage。
语域：mixed 常见场景：everyday body talk、chemistry、embryology、formal writing 该词的正式程度随语境变化：日常谈论身体时多用于口语，化学、胚胎学等专业语境中较正式。通常需要根据上下文判断具体含义。
village、image、package、cabbage 与 cleavage 一样以 -age 结尾，且词尾的 age 都读作 /ɪdʒ/（非重读音节），因此词尾发音相同；但 cleavage 的重读元音是 /iː/，这些词的重读元音各不相同，所以它们不是完整押韵。garage 的拼写也是 -age，但通常读作 /ˈɡærɑːʒ/（英式），结尾是 /ʒ/ 而非 /dʒ/，要特别注意。leave 与 cleavage 的拼写中都含有 eav，且 ea 读作 /iː/，但 leave 以 /v/ 结尾，没有 /ɪdʒ/ 后缀，也不押韵。
Dictionary facts from ECDICT, WIKTIONARY.