pilot whale

例句：

1. 1. The pilot whale is the largest living mammal in the world.
   领航鲸是世界上现存最大的哺乳动物。
2. 2.They observed the behavior of the pilot whales as they swam through the water.
   他们观察了领航鲸在水里游动时的行为。
3. 3.Pilot whales are known for their intelligence and playful nature.
   领航鲸以其智能和活泼的性格而闻名。