聽(tīng)課
課程多端同步更新,充分利用零碎時(shí)間。做題
海量精選試題,想練就練,瞬間提分。答疑
網(wǎng)校名師24小時(shí)在線答疑解惑。直播
名師大咖面對(duì)面,有問(wèn)有大收獲多。Some of us feel well-rested after a solid eight hours of sleep. For others, closer to nine feels best. For others still, a little less will do. How much sleep we prefer to get is highly subjective -- but how much sleep we need is a bit more concrete.
我們中的一些人,睡足了8個(gè)小時(shí)后覺(jué)得無(wú)比神清氣爽。對(duì)于另一些人來(lái)說(shuō),睡差不多9個(gè)小時(shí)為最佳。還有一些人,稍微不足這點(diǎn)時(shí)間剛剛好。我們更愿意睡多久是非常主觀的——但是我們需要多少睡眠就是有那么一點(diǎn)具體有形的了。
After web analytics showed the vast popularity of the How Much Sleep Do We Really Need? feature of the National Sleep Foundation's (NSF) website, a panel of experts set about to reassure that the information provided there was the most accurate and up to date.
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