Let’s take a look. Sleep debt is the cumulative effect of not getting enough sleep. A large sleep debt may lead to mental and/or physical fatigue.

睡眠負(fù)債(sleep debt)指長(zhǎng)期睡眠不足產(chǎn)生的影響。睡眠負(fù)債過(guò)多可能會(huì)導(dǎo)致精神或身體疲憊。原來(lái)這就是“睡眠負(fù)債”，那么導(dǎo)致“睡眠負(fù)債”的原因，又或者說(shuō)導(dǎo)致這種情況出現(xiàn)的來(lái)源又有哪些呢?別著急，我接著來(lái)看看下面的內(nèi)容。

There are presumed to be two kinds of sleep debt, caused by partial sleep deprivation or total sleep deprivation. Partial sleep deprivation occurs when a person sleeps too little for many days or weeks. Total sleep deprivation means being kept awake for days or weeks.

睡眠負(fù)債的來(lái)源有兩種：部分睡眠不足和整體睡眠不足。前者指一個(gè)人連續(xù)幾天或幾周每天都睡很短的時(shí)間;后者則指一個(gè)人連續(xù)幾天或幾周不合眼。幾天或者幾周不睡覺(jué)?這樣的睡眠狀況真的很糟糕，長(zhǎng)期處于這樣“睡眠負(fù)債”狀況肯定會(huì)造成一定的影響的。

It may cause emotional upset, compromise work performance,weaken memory, alertness, attention as well as judgment. It may also speed up one’s ageing process and lead to other types of diseases.

長(zhǎng)期處于睡眠負(fù)債的狀況中，不但會(huì)影響情緒、工作表現(xiàn)、還會(huì)減低記憶力、警覺(jué)性、注意力和判斷力、并且加速老化，甚至引發(fā)其它疾病。