后小腿

例句：

1. 1. The runner finished the race with a strong finish.
   这位跑步者以强劲的冲刺结束了比赛。
2. 2. He stretched his legs after a long day at work.
   在工作了一整天之后，他伸展了一下双腿。
3. 3. The dog wagged its tail happily as it saw its owner coming home.
   当狗看到主人回家时，高兴地摇着尾巴。