conchal crest

例句：

1. 1. The conchal crest ofthe sea lion is a distinctive feature.
   海狮的头冠是其独特的特征。
2. 2.The conchal crest was usedas a symbol of power and status inancient times.
   古代，头冠作为权力和地位的象征。
3. 3. The conchal crestis made from a material that is bothdurable and lightweight.
   头冠由一种既耐用又轻便的材料制成。