a sheave in sth
常用 in 说明滑轮装在滑轮组、桅杆等部件之中。
The rope runs over a sheave in the block.
绳索绕过滑轮组里的一个滑轮。
钥匙孔盖板；轮缘有凹槽以容纳绳索的轮子,装在滑轮组、桅杆等上；滑轮。；遮盖锁孔的滑动锁眼盖。；滑车轮；绞缆车
A wheel with a grooved rim, used with a rope or cable, especially as the wheel of a pulley.
轮缘有凹槽以容纳绳索的轮子,装在滑轮组、桅杆等上；滑轮。
A wheel having a groove in the rim for a rope to work in, and set in a block, mast, or similar; the wheel of a pulley.
遮盖锁孔的滑动锁眼盖。
A sliding scutcheon for covering a keyhole.
The rope runs over the sheave inside the block.
绳子绕过滑轮组里的滑轮槽轮。
用法提示：sheave 在此指滑轮上的槽轮，作名词。
He greased the sheave so the pulley would turn smoothly.
他给滑轮槽轮上了润滑油，这样滑轮就能平稳转动。
用法提示：sheave 指滑轮上的槽轮，是名词。
The crane's sheave is worn and needs replacing.
起重机的滑轮槽轮磨损了，需要更换。
用法提示：sheave 指起重机滑轮上的槽轮，作名词。
常用 in 说明滑轮装在滑轮组、桅杆等部件之中。
The rope runs over a sheave in the block.
绳索绕过滑轮组里的一个滑轮。
讲滑轮结构时常用 groove（轮槽）一词，说明绳子卡放的位置。
The rope must sit firmly in the groove of the sheave.
绳索必须牢牢嵌在滑轮的轮槽里。
作定语时直接放在名词前，如 sheave block、sheave groove。
He replaced the worn sheave block on the mast.
他更换了桅杆上磨损的滑轮组。
grammar · medium
易错句子He replaced sheave in the block.
正确表达He replaced the sheave in the block.
sheave 是可数名词单数，特指某个滑轮轮子时前面必须有定冠词 the；汉语名词没有冠词系统，不能省略。
grammar · medium
易错句子The block contains two sheave.
正确表达The block contains two sheaves.
sheave 是可数名词，复数形式为 sheaves；汉语名词不通过词形变化表示复数，所以不能保留单数形式。
grammar · medium
易错句子They mounted a sheave on the deck and ran the rope through it.
正确表达They mounted a pulley block on the deck and ran the rope through its sheave.
sheave 只指滑轮中带槽的轮子，不是整个滑轮装置；汉语“滑轮”可指整个装置，所以整体应用 pulley (block)，其中的轮子才叫 sheave。
sheave 指带槽的滑轮轮子或锁孔盖板，是可数机械/五金零件；sheaf 指捆扎成的一束，常用 a sheaf of。二者同音、复数同为 sheaves，但搭配对象不同：滑轮用 sheave，麦束或文件用 sheaf。
sheave 是名词，读 /ʃiːv/，指滑轮；shave 常作动词或名词，读 /ʃeɪv/，指剃须或刮削。元音不同，词性与典型搭配也不同：说“滑轮”用 sheave，说“刮、剃”用 shave。
sheave 是轮缘开槽、供绳索绕过的轮子；sleeve 指衣服的袖子或套在轴上的管状套筒。拼写相近但所指不同，机械语境中 sleeve 是套筒，不是绕绳的滑轮。
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