Curved shapes will downplay the angles of this face shape. Frames that are flat along the bottom can look boxy.

太阳镜的曲线将会弱化脸部的棱角。镜架下方过平的话会使脸颊看起来更方。

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The tunnel section is advised to adopt curved shape and full-face excavation by controlled blasting to reduce disturbance on surrounding rock and maintain its self-supporting capability.

隧洞断面宜采用曲线形状； 宜采用控制爆破全断面开挖，减少对围岩的扰动以保持岩体自承能力；

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