noun 下载 🔗分享 炮弹鱼,板机鱼 Any of several brightly coloured fish, of the family Balistidae, that inhabit tropical reefs and have an erectile spine on the dorsal fin. Examples : "While snorkeling on the coral reef, we saw a vibrant triggerfish with its dorsal fin spine raised. " 在珊瑚礁浮潜时,我们看到一条色彩鲜艳的炮弹鱼 (板机鱼),背鳍上的棘刺竖了起来。 fish animal organism biology nature ocean color 与AI对话词汇游戏阅读练习