be calloused from sth
from 引出造成皮肤起茧的原因，常与 be 动词连用作表语。
His hands were calloused from years of working on the farm.
他的双手因多年在农场干活而长满老茧。
有老茧的；起茧的
长茧的；皮肤因磨损而变硬的；粗糙的；粗硬的；起老茧的
长茧的；皮肤因磨损而变硬的
having calluses; having skin made tough and thick through wear
His hands were calloused from years of manual labor.
他的双手因多年的体力劳动而长满老茧。
用法提示：calloused 作表语形容词，描述手部因劳作而变得粗糙、起茧。
She had calloused feet from walking barefoot every day.
她每天赤脚走路，脚上长了老茧。
用法提示：calloused 作定语形容词，修饰feet，指脚部皮肤因磨损而变硬。
The farmer's calloused fingers could still detect the tiny crack in the handle.
这位农民粗糙的手指仍能感觉到手柄上的细微裂缝。
用法提示：calloused 作定语形容词，描述手指因长期劳作而变得粗糙硬实。
from 引出造成皮肤起茧的原因，常与 be 动词连用作表语。
His hands were calloused from years of working on the farm.
他的双手因多年在农场干活而长满老茧。
become 或 get 后接 calloused，强调皮肤逐渐变硬、长茧的过程。
Her fingertips became calloused after months of playing the guitar.
弹了几个月吉他后，她的指尖变得粗糙起茧。
leave 后可接身体部位作宾语，再接 calloused 作宾语补足语。
The heavy rope left his palms calloused.
粗重的绳子使他的手掌磨出了老茧。
作定语直接修饰名词，常见于 hands、fingers、feet 等身体部位。
He ran his calloused fingers over the rough wood.
他用长满老茧的手指摸了摸粗糙的木头。
grammar · medium
易错句子My hands calloused after working in the garden all day.
正确表达My hands were calloused after working in the garden all day.
calloused 是形容词，作表语时必须由系动词 be 引导；汉语「我的手起茧了」不用系动词，所以学习者常漏掉 were。
grammar · medium
易错句子He has a calloused on his foot.
正确表达He has a callus on his foot.
calloused 只能作形容词，不能作名词；表示「茧子」这个名词要用 callus，复数为 calluses。
grammar · medium
易错句子She was very calloused toward the suffering of others.
正确表达She was very callous toward the suffering of others.
calloused 只表示皮肤因摩擦变硬；表示「冷酷无情、麻木不仁」要用 callous，两词拼写相近但意义不同。
作“长茧的”义时 callous 与 calloused 有重叠，但现代常见用法中 callous 多指对他人痛苦冷漠无情；指皮肤因摩擦变厚时 calloused 更明确、更常用。
callus 是名词，指皮肤上磨出的硬块；calloused 是形容词，描述皮肤长了茧或变硬。
callus（词根，名词）
callus + -ous（形容词后缀）
callous + -ly（副词后缀）
callous + -ness（名词后缀）
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