名詞 rem:

1. a recurring sleep state during which dreaming occurs; a state of rapidly shifting eye movements during sleep
   同義詞：paradoxical sleep, rapid eye movement sleep, REM sleep, rapid eye movement
2. (Roentgen Equivalent Man) the dosage of ionizing radiation that will cause the same amount of injury to human tissue as 1 roentgen of X-rays

1. Judging from the fact that our bodies automatically compensate for a loss of REM sleep, we apparently have a need for REM sleep.
   從人體能自動補(bǔ)償損失掉的“眼球快動睡眠”的事實來推測：很明顯，我們需要“眼球快動睡眠”。
2. In some respects REM sleep seems similar to being awake.
   他們在某些(所有／沒有／一些)方面彼此相似。

rem

n.Physics （名詞）【物理學(xué)】
The amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays.
雷姆：產(chǎn)生和一拉得強(qiáng)滲透的X光射線等量的生物反應(yīng)的致電離輻射的數(shù)量
A unit for measuring absorbed doses of radiation, equivalent to one roentgen of x-rays or gamma rays.
雷姆：度量被吸收的輻射數(shù)量單位，相當(dāng)于一倫琴的X光射線或伽碼射線

來源：
r(oentgen) e(quivalent in) m(an)
r(oentgen) e(quivalent in) m(an)