睡眠时间的英文：
sleep

参考例句：

Made nothing of cutting down on his sleep.
不在乎减少睡眠时间

Other small studies have found adults who sleep less than six hours may be at higher risk for diabetes and obesity
其他小型研究发现睡眠时间小于6小时的成年人得糖尿病和肥胖症的危险很大。

She was still languid from her brief sleep and the exhilaration of the evening.
昨晚由于兴奋，夜间睡眠时间太少，她现在仍倦怠无力。

sleep是什么意思：
v. 睡觉；为…提供床位；提供住宿
n. 睡眠，睡觉

sleep treatment
睡眠治疗法

Finally she drifted into sleep.
最后她不知不觉地睡着了。

Do you have a strange sleep habit?
你睡觉时有奇怪的嗜好吗？

Let sleeping dogs lie.
别惹麻烦。

Wake not a sleeping lion
别自找麻烦