名词
中文翻译：海象牙
同义词：
['walrus ivory', 'walrus tusk例句：1. The ivory trade has been a contentious issue in recent years.（近年来，象牙贸易一直是争议的焦点。）']
例句：
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1. The ivory trade has been a contentious issue in recent years.
近年来，象牙贸易一直是争议的焦点。
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2.The ivory is used for making musical instruments and sculptures.
这种象牙被用来制作乐器和雕塑。
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3. The conservationists are working to protect the endangered species and their habitats.
保护主义者正在努力保护濒危物种及其栖息地。