saai1 sam1 gei1 ngaai4 ngaan5 fan3嘥心機,挨眼瞓嘥心机,挨眼瞓

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Yalesāai sām gēi ngàaih ngáahn fan

Definition

To work hard for nothing; to waste one's efforts and endure sleepiness in vain.

colloquialdaily actionswork

How it's used

嘥心機 carries a sense of frustration or futility, often used when someone realizes their hard work will not yield the expected results. 挨眼瞓 is specifically used for the act of enduring sleep deprivation to complete a task, highlighting the physical struggle of keeping one's eyes open.

Common phrases

really a waste of effort
working while fighting sleepiness

Common mistake

Learners often confuse 嘥心機 with 嘥氣, but 嘥氣 usually refers to wasting one's breath or energy arguing about something pointless, whereas 嘥心機 focuses on the wasted mental effort or planning.

Grammar color guide

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