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flagging + noun
flagging 常修饰 energy, spirits, morale 等表示精力或士气名词。
He tried to revive his flagging energy.
他试图恢复他疲惫的精力。
衰退的；减弱的；疲惫的
先理解核心含义，再看它在真实句子里的用法。
衰退的；减弱的；疲惫的
Becoming tired, weak, or less active; declining in strength or energy.
He tried to revive his flagging energy.
他试图恢复他疲惫的精力。
疲惫的；日益衰弱的
Becoming tired or less dynamic; declining in strength; dwindling.
After the long hike, his flagging energy made it hard to continue.
长途徒步后，他疲惫不堪，很难继续走下去。
The team's flagging morale was boosted by the coach's speech.
教练的讲话提振了球队低落的士气。
She drank coffee to revive her flagging concentration in the afternoon.
她喝咖啡来恢复下午减退的注意力。
flagging 常修饰 energy, spirits, morale 等表示精力或士气名词。
He tried to revive his flagging energy.
他试图恢复他疲惫的精力。
作表语时主语通常为 spirits, health 等。
After the long hike, his spirits were flagging.
长途跋涉后，他的精神疲惫不堪。
Not this
He was flagged after the long walk.
Use this
He was flagging after the long walk.
错误使用了过去分词 "flagged"，但该形式表示 '标记' 或 '示意'，而非 '疲惫'。表示 '疲惫无力' 的正确形容词是 "flagging"。
Not this
He was flagging of exhaustion.
Use this
He was flagging from exhaustion.
汉语母语者易将 '因为' 译为 'of'，但英语中表示原因的介词应为 'from'，即 "flagging from exhaustion"。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
低落的情绪；不振的精神
A short break helped revive our flagging spirits.
短暂休息帮助我们恢复了低落的情绪。
衰退的精力；日渐不足的体力
She pushed on despite her flagging energy.
尽管精力不济，她还是继续坚持。
低落的士气
The victory boosted the team's flagging morale.
这场胜利鼓舞了球队低落的士气。
消退的热情
He tried to rekindle his flagging enthusiasm for the project.
他试图重新燃起对这个项目消退的热情。
疲弱的经济；日渐疲软的经济
The government introduced measures to stimulate the flagging economy.
政府推出措施以刺激疲弱的经济。
逐渐减弱的兴趣
Interactive lessons can help students with flagging interest.
互动式课程有助于那些兴趣逐渐减退的学生。
Use flagging naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象一面旗（flag）没了风，软软垂下——人疲惫、精力衰退时也像这样，就是 flagging。
语域：formal 常见场景：formal writing、news reports、speeches 此义项（指精力、热情或状态逐渐减弱）通常用于书面和较正式的表达，如新闻报道或演讲；日常口语中更常说 tired 或 weakening。
常用作定语或表语，描述事物衰落或疲倦
Dictionary facts from DICTIONARY_API_DEV, ECDICT, OCTANOVE, WIKTIONARY, WORDNET.