shuì / mián / bù / zú / kě / néng / shǐ / rén / biàn / de / yì / jī / rě / nán / yǐ / jí / zhōng / zhù / yì / lì睡眠不足可能使人变得易激惹,难以集中注意力。Lack of sleep can make people irritable and unable to concentrate.