a dolphinfish
可数，指一条鱼。
A dolphinfish can change color rapidly.
一条鲯鳅可以快速变色。
鲯鳅
鲯鳅科的大型食用及游钓鱼类,常见于热带和亚热带水域。
a large tropical and subtropical food and game fish of the family Coryphaenidae
鲯鳅科的大型食用及游钓鱼类,常见于热带和亚热带水域。
A large food and game fish of the Coryphaenidae family which is commonly found in tropical and subtropical waters.
We caught a large dolphinfish while fishing off the coast.
我们在沿海捕鱼时钓到了一条大鲯鳅。
用法提示：dolphinfish 作为可数名词，指一种鱼，这里表示具体的鱼。
The restaurant's menu features grilled dolphinfish with lemon sauce.
餐厅的菜单上有柠檬酱烤鲯鳅。
用法提示：dolphinfish 作为不可数名词，指鱼肉，这里用作菜肴名称。
Dolphinfish are known for their vibrant colors when they are alive.
鲯鳅在活着的时候因其鲜艳的颜色而闻名。
用法提示：dolphinfish 作为可数名词复数形式，泛指该类鱼。
可数，指一条鱼。
A dolphinfish can change color rapidly.
一条鲯鳅可以快速变色。
不可数，指鱼肉。
Dolphinfish is often grilled in Hawaii.
鲯鳅在夏威夷常被烤制。
grammar · medium
易错句子Dolphinfish are known for their intelligence and playful behavior.
正确表达Dolphins are known for their intelligence and playful behavior.
学习者误将'dolphinfish'（鲯鳅，一种鱼）与'dolphin'（海豚，哺乳动物）混淆。这里谈的是海豚的特性，应使用'dolphin'。
grammar · medium
易错句子We caught several dolphinfishes during the fishing trip.
正确表达We caught several dolphinfish during the fishing trip.
dolphinfish的复数形式与单数相同，不需要加-es。正确形式是'dolphinfish'。
dolphinfish（鲯鳅）是一种鱼类，而dolphin（海豚）是海洋哺乳动物，两者完全不同。
mahimahi是dolphinfish的常用别名，尤其在菜单上常见，而dolphinfish是较正式的英文名称。
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