The fold where the abdomen meets the inner thigh.

• The adjacent inguinal area of the body.

腹部与大腿内侧相接处的褶皱。

• 周围的腹股沟区域。

The projecting edge formed where two vaults intersect.

• The curved surface created by their intersection.

两座拱顶相交处形成的凸出棱脊。

• 由其相交产生的弯曲表面。

A structure projecting from a beach to reduce erosion and drift.

• Typically wood, rock, or concrete, perpendicular to the shore.

自海滩伸向海中的防护结构，用于减缓侵蚀与漂移。

• 通常为木、石或混凝土，垂直于海岸线。

To build vaults with groins.

• To construct shoreworks with groins.

在拱顶中设置交叉拱脊。

• 在海岸线上修建丁坝。