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词组
once a… always a…
释义
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once a…, always a…
in certain respects people do not change, although circumstances change
（表示一个人在某些方面改变不了）一次为…，便永远是…
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He can’t resist explaining things in detail. Once a teacher, always a teacher.
他总是忍不住详细解释每一件事。真是一朝为师，永远为师。
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on red alert
on sale
on sb’s account
on sb’s behalf
on sb’s books
on sb’s coat-tails
on sb’s hands
on sb’s head be it
on sb’s heels
on sb’s (own) head be it
on sb’s own head be it
on sb’s part
on sb’s say-so
on sb’s shoulders
on sb’s suggestion
on sb’s tail
on second thought
on second thoughts
(on) Shanks’s pony
on Shanks’s pony
onside
(on) skid row
on skid row
on song
on standby
英语词组固定搭配大全包含20132条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。
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更新时间：2026/7/14 12:36:07