长期睡眠不足会让人整天无精打采，工作效率也会下降。

Chángqī shuìmián bùzú huì ràng rén zhěngtiān wújīngdǎcǎi, gōngzuò xiàolǜ yě huì xiàjiàng.

Long-term lack of sleep makes people listless all day, and work efficiency also drops.

连续加班一周后，大家都显得无精打采。

Liánxù jiābān yì zhōu hòu, dàjiā dōu xiǎnde wújīngdǎcǎi.

After working overtime for a week in a row, everyone seemed listless.