eight hours' sleep a night=Eight hours of sleep every night吗

eight hours' sleep a night=Eight hours of sleep every night吗
eight hours' sleep a night=Eight hours of sleep every night吗

eight hours' sleep a night=Eight hours of sleep every night吗
是的.在没有特殊语境的情况下可以这么理解.

每晚睡眠8小时，a night 与 per night更接近

no. a is not every.