名词
中文翻译：双凸的
同义词：
['biconvex', 'biconcave例句：1. The gemstone is bipunctate', 'with two indentations on each side.（这块宝石是双凸的，每边有两个凹陷。）']
例句：
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1. The gemstone is bipunctate, with two indentations on each side.
这块宝石是双凸的，每边有两个凹陷。
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2. The rock is bipunctate, indicating that it has been worn by water.
这块岩石是双凸的，表明它被水侵蚀过。
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3.The surface of the stone is bipunctate, providing a unique texture.
石头的表面是双凸的，提供了独特的纹理。