armchair + noun
armchair 作形容词时通常只作定语，放在名词前，表示不实际参与、只是空谈，也可指退休后不再实际参与的人。
He became an armchair critic after retiring.
他退休后成了个空谈的批评者。
不直接参与实际事务的；尤指已退休的人员
Remote from actual involvement, often describing someone who is no longer actively engaged.
不直接参与实际事务的；尤指已退休的人员
Remote from actual involvement, including a person retired from previously active involvement.
After retiring, he became an armchair gardener, offering advice but never touching a shovel.
退休后，他成了一个空谈的园艺爱好者，只会提建议，从不动铲子。
用法提示：armchair 作形容词，表示‘空谈的、不实际参与的’，修饰 gardener。
She enjoys armchair debates about football tactics, though she has never played the game.
她喜欢空谈足球战术的争论，尽管她从未踢过球。
用法提示：armchair 作形容词，表示‘不实际参与的’，修饰 debates。
It is easy to make armchair predictions about the economy from a comfortable office.
坐在舒适的办公室里对经济做空谈式的预测很容易。
用法提示：armchair 作形容词，表示‘纯理论的、不实际接触的’，修饰 predictions。
armchair 作形容词时通常只作定语，放在名词前，表示不实际参与、只是空谈，也可指退休后不再实际参与的人。
He became an armchair critic after retiring.
他退休后成了个空谈的批评者。
who/that 从句常进一步说明此人只评论或想象某活动，却不亲身参与。
She is an armchair traveler who reads about remote places but never visits them.
她是个空谈的旅行者，只读关于偏远地方的书，却从不去那些地方。
grammar · medium
易错句子He's just an empty-talk expert.
正确表达He's just an armchair expert.
汉语“空谈”直译成 empty talk 再修饰人，不符合英语习惯：empty 只表示“空的、无内容的”，表示“不实际参与、只停留在理论层面”要用只作定语的形容词 armchair，如 armchair expert（空谈专家）。
grammar · medium
易错句子He is armchair.
正确表达He is an armchair strategist.
armchair 是只作定语的形容词，不能像 theoretical 那样单独作表语，后面必须跟它修饰的名词；表示“某人”时要补上 critic、strategist 等名词，说 an armchair strategist，而不能只说 He is armchair。
grammar · medium
易错句子He armchairs about politics all day.
正确表达He gives armchair opinions about politics all day.
armchair 是形容词，不是动词，不能直接作谓语；汉语“空谈”却是动词，容易让学生直接挪用。英语要用 give/make + armchair + 名词的结构，如 give armchair opinions（空谈）来表达同一意思。
空谈的批评者；不实际参与却爱指手画脚的人
He is just an armchair critic who has never managed a project himself.
他不过是个空谈的批评者，自己从未管理过项目。
事后诸葛亮；场外指挥者
After the game, every fan became an armchair quarterback.
比赛结束后，每个球迷都成了事后诸葛亮。
神游旅行者；足不出户靠想象旅行的人
As an armchair traveler, she explores the world through documentaries.
作为一个神游旅行者，她通过纪录片探索世界。
纸上谈兵的将军；不实际参战却爱指挥的人
The retired colonel was dismissed as an armchair general.
那位退役上校被人斥为纸上谈兵的将军。
空谈专家；没有实际经验却自认内行的人
Talk to someone with real experience instead of an armchair expert.
去找有实际经验的人谈，而不是空谈专家。
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空谈哲学家；不参与实践只发议论的人
He spends his evenings as an armchair philosopher, debating politics.
他晚上就当个空谈哲学家，辩论政治。