JLPT N1 Advanced
昼夜
Day and night; around the clock.
Readings
Noun, Adverb
Day and Night" / "Around the Clock
Describes the continuous passage of time covering both light and dark hours, often implying unceasing activity or effort.
Example
彼 は プロジェクト を 終わらせる ため に 、 昼夜 働いた 。
He worked day and night to finish the project.
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