这条牛仔裤的裤腿从膝盖到脚踝逐渐变窄。
The legs of these jeans ___taper from the knees down to the ankles.
他的头发在后脑勺逐渐变细。
His hair ___tapered at the back of his head.
减量训练是指在马拉松比赛前逐步减少训练量。
___Tapering means gradually reducing your training load before the marathon.