These opencut, containing shed-tunnel and opencut in the shape of arch, were often destroyed in the earthquake disaster, and makes more difficulties for the disaster relief officials.
在地震时常常引起这些明洞（拱形明洞或棚洞）的破坏，给抗震救灾工作造成极大的困难。
Make sure the salesperson looks at the shape and arch to figure out what type of foot (high arches or flat feet, for example) you have.
确保销售员看了脚的形状和拱，断定你的脚型是哪一种。
The shape of dental arch for orthodontic diagnosis and treatment is of great significance.
牙弓形状的检测对正畸诊断和治疗具有重要的意义。
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