scapiform

例句：

1. 1. The scapiform is a unique feature of the dinosaurs.
   翼龙的独特特征之一是它的翼状肢。
2. 2. The scapiform helps the bird to fly and hunt for food.
   翼状肢帮助鸟类飞行和觅食。
3. 3. The scientists are studying the scapiforms to understand their evolution.
   科学家们正在研究翼状肢以了解它们的进化。