Fartlek
n. [体]法特莱克训练法(一种加速跑与慢跑交替进行的中长跑训练方法)
🗣️ 情景例句
How long will this be on sale?
这种商品减价时间有多久？
He who wants a mule without fault,must walk on foot.
指望驴子无缺点，只有自己徒步行。
He explained that he had tried to fix the air-line to the supply line that ran round the port but could not because the fittings did not match.
他解释说他想供气管安装到铺设在码头周围的供应管上，但因为接头不相配而接不上。