逆戟鲸

例句：

1. 1. The orca is the largest species of killer whale in the world.
   逆戟鲸是世界上体型最大的杀手鲸种类。
2. 2. They have been studying the behavior of these majestic creatures for decades.
   他们研究这些壮观生物的行为已经几十年了。
3. 3. In the wild, they are known for their intelligence and playful nature.
   在野外，它们以它们的智能和活泼的天性而闻名。