名词
中文翻译：回旋镖
同义词：
['spiral', 'serpentine']
例句：
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1.The lemniscate is a unique shape that can be found in many natural habitats.
这种回旋镖的形状在许多自然栖息地中都能找到。
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2.The lemniscate was used by ancient civilizations to navigate through the desert.
古代文明使用这种回旋镖来穿越沙漠。
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3.The lemniscate is often found in the ocean floor, where it helps animals to move around and find food.
这种回旋镖通常在海洋底部被发现，帮助动物移动和寻找食物。