胫节

例句：

1. 1. The runner's leg muscles are working hard to keep up with the pace.
   跑步者的腿部肌肉正在努力跟上节奏。
2. 2. The soldier had to bend down to avoid hitting his injured leg.
   士兵不得不弯下腰以避免撞到受伤的腿。
3. 3. He was walking on crutches after breaking his tibia in a fall.
   他在跌倒后折断了腿，现在正用拐杖行走。