名词
中文翻译：圆盘
同义词：
['disk', 'cylinder']
例句：
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1.The pinaculum is used to hold the camera in place during photography.
圆盘用来在摄影时固定相机。
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2.The scientist used a pinaculum to measure the length of the object.
科学家用一个圆筒来测量物体的长度。
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3. The pinaculum was made from a piece of wood and had a diameter of 5 cm.
圆筒由一块木头制成，直径为5厘米。