noun 下载 🔗分享 虎鲸,逆戟鲸。 A sea mammal (Orcinus orca) related to dolphins and porpoises, commonly called the killer whale. Examples : "During our whale watching tour, we spotted an orca leaping out of the water. " 在我们的观鲸之旅中,我们看到了一只虎鲸跃出水面。 animal ocean biology nature 与AI对话词汇游戏阅读练习