名词
中文翻译：背鳍盾
同义词：
['dorsal shield', 'dorsal armor']
例句：
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1.The fish was swimming with its opisthonotal shield raised high.
那条鱼带着它的背鳍盾高高举起，正在游动。
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2. The shark's opisthonotal shield is a formidable defense against predators.
鲨鱼的背鳍盾是它对抗捕食者的可怕防御。
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3. The scientist used a microscope to examine the structure of the fish's opisthonotal shield.
科学家使用显微镜来检查鱼的背鳍盾的结构。