后跟的用法和样例：
例句
-
鞋后跟鞋或靴支撑脚跟部分的组合部分
The built-up portion of a shoe or boot, supporting the heel. -
鞋子太紧了，我脚后跟起了个泡。
I have a blister on my heel because my shoes are too tight. -
她真可怜，走路不方便，她脚后跟长了一个水泡。
She, poor soul, is tied by the leg. She had a blister on one of her heels. -
他立正敬礼，鞋后跟发出咔嗒一声。
He saluted with a click of his heels.
