Delphinidae

例句：

1. 1. The Delphinidae is a group of marine mammals that includes dolphins.
   海豚科是一群海洋哺乳动物，包括海豚。
2. 2.The Delphinidae is the largest family of toothed whales.
   海豚科是最大的齿鲸家族。
3. 3. The Delphinidae is known for their intelligence and social behavior.
   海豚科以其智能和社交行为而闻名。