名词中文翻译
中文翻译：背鳍
同义词：
['dorsal fin', 'dorsal spine']
例句：
-
1. The fish had a long dorsal fin to help it swim efficiently.
这条鱼有一条长长的背鳍，帮助它游得又快又有效。
-
2. The dorsal fin of the shark is used for propulsion.
鲨鱼的背鳍用于推进。
-
3. The dorsal fin of the whale is used for balance and steering.
鲸鱼的背鳍用于平衡和转向。