名词
中文翻译：海绵动物
同义词：
['sponges例句：1. These ammonoids are believed to have lived in the ocean for millions of years.（这些海绵动物被认为在海洋中生活了数百万年。）']
例句：
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1. These ammonoids are believed to have lived in the ocean for millions of years.
这些海绵动物被认为在海洋中生活了数百万年。
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2.The discovery of these ammonoids has sparked a new interest in marine biology.
这些海绵动物的发现激发了对海洋生物学的新兴趣。
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3. The ammonoids were once thought to be extinct, but recent research has shown otherwise.
这些海绵动物曾被认为已经灭绝，但最近的研究表明并非如此。