名词
中文翻译：近似凹形
同义词：
['approximately concave', 'quasi-concave例句：1. The shape of the curve is quasi-concave', 'which makes it difficult to draw a precise line.（这个曲线的形状是近似凹形的，这使得画一条精确的线变得困难。）']
例句：
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1. The shape of the curve is quasi-concave, which makes it difficult to draw a precise line.
这个曲线的形状是近似凹形的，这使得画一条精确的线变得困难。
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2.The quasi-concave surface of the object is smooth and easy to touch.
物体的准凹表面光滑且易于触摸。
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3.The quasi-concave design of the car's bodywork is unique and eye-catching.
汽车车身的准凹设计独特且引人注目。