nightlong + noun
nightlong 通常作定语，修饰名词。
They embarked on a nightlong journey.
他们开始了一整夜的旅程。
整夜的；持续一夜的
Lasting for one entire night; lasting all night.
整夜的；持续一夜的
Lasting a night (i.e. the duration of one night); lasting all night.
After a nightlong meeting, the team finally reached a consensus.
经过一夜的会议，团队终于达成了共识。
用法提示：这里nightlong作形容词，修饰meeting，表示‘通宵的’。
The nightlong celebration ended with a beautiful sunrise.
通宵的庆祝活动以美丽的日出结束。
用法提示：nightlong修饰celebration，强调持续一整夜。
She managed to finish the report after a nightlong effort.
经过一夜的努力，她完成了报告。
用法提示：nightlong修饰effort，表示‘通宵的’。
nightlong 通常作定语，修饰名词。
They embarked on a nightlong journey.
他们开始了一整夜的旅程。
作表语的用法较少见，但语法上成立。
The vigil was nightlong.
守夜活动是通宵的。
grammar · medium
易错句子We worked nightlong to finish the project.
正确表达We worked all night to finish the project.
nightlong是形容词，不能作状语修饰动词；应使用all night作为时间状语。
grammar · medium
易错句子The nightlong was very tiring.
正确表达The all-night party was very tiring.
nightlong是形容词，不能作名词；应使用'all-night + 名词'结构。
overnight 可表示'过夜的'（如 overnight bag），而 nightlong 仅表示'持续整个夜晚'，不用于物品。
all-night 更常见于口语和固定搭配（如 all-night diner），nightlong 较文雅且罕见。
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