名词
中文翻译：双生沟槽
同义词：
['twin grooves', 'twin ridges']
例句：
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1.The twinned grooves of the gears are essential for smooth operation.
齿轮的双生沟槽对于平滑运转至关重要。
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2.The twinned grooves on the surface of the metal are designed to hold the screw together.
金属表面的双生沟槽设计用来固定螺丝。
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3.The twinned grooves in the wall were created by a skilled craftsman.
墙壁上的双生沟槽是由一位熟练工匠制作的。