slack off

动词

中文：偷懒、减少、下降

To be deliberately unproductive in one's work or study. (informal, intransitive) · Emily is slacking off since this is her last semester; she completely stopped trying to make good grades.
To decrease in intensity; to ease off; to diminish; to die down. (intransitive) · Thankfully the hail slacked off after a few minutes.

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