unclosed contour

例句：

1. 1.The artist's sketch of the landscape is a perfect representation of its unclosed contours.
   艺术家对这幅风景画的素描完美地捕捉了其未闭合轮廓。
2. 2.The scientist discovered a new species with an unclosed contour that was previously unknown.
   科学家发现了一种具有未闭合轮廓的新物种，这种轮廓以前是未知的。
3. 3.The engineer used CAD software to create a detailed model of the unclosed contours in the building.
   工程师使用CAD软件创建了建筑物未闭合轮廓的详细模型。