line symmetry

例句：

1. 1.The shape of the crystal is very line-symmetrical.
   这个晶体的形状非常对称。
2. 2. The design of this car is characterized by its line-symmetrical lines.
   这辆车的设计以其线条的对称性而著称。
3. 3. The structure of the building is line-symmetrical, which makes it easy to navigate.
   这座建筑的结构是线对称的，这使得它易于导航。