他的动作很迟缓。
tāde dòngzuò hěn chíhuǎn 。
His movements are very slow.
由于天气炎热,大家的反应有些迟缓。
yóuyú tiānqì yánrè , dàjiā de fǎnyìng yǒuxiē chíhuǎn 。
Due to the hot weather, everyone's reactions are somewhat sluggish.
这个程序运行得很迟缓,需要优化。
zhègè chéngxù yùnxíng déhěn chíhuǎn , xūyào yōu huà 。
This program runs very slowly and needs optimization.