第1期 TED英语角||原声笔记||音频版：我们需要多少睡眠时间?

wonderful, average adult, recommendation, epidemiological, mortality, stipulate

lincar, peculiar, put forward, explamations, individuals, suffering from, infected, unmeasured, triggering

quality, independent of, quantity, associated with, typically, overcome, masquerading,take a step back, modernity, hard labor, prioritize