Margo ulnaris

例句：

1. 1. The Margo ulnaris is a small, curved bone in the hand that helps with gripping and pinching.
   马戈的拇指状骨是手中的一个小弯曲骨头，有助于握紧和捏合。
2. 2. The Margo ulnaris can be injured during sports activities or by accident.
   马戈的拇指状骨可能在体育活动或意外中受伤。
3. 3. The Margo ulnaris plays a crucial role in the function of the hand.
   马戈的拇指状骨在手的功能中起着关键作用。