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可可英语每日一句口语：
Men are anxious to improve their circumstances, but are unwilling to improve themselves; they therefore remain bound.
人们渴望改善他们的周遭环境，但是却不愿意改善自己，他们因此停留在原地，无法进步。
【知识点讲解】
willing to 情愿
例句：
He was willing to make any sacrifice for peace.
他愿意为和平作出任何牺牲。
