圆形或三角形的耳环也会增加脸部的圆润度。
You can also choose circular or triangular earrings; they will add roundness to your face.
在健康的脊柱，椎管是圆形或三角形的，为脊髓提供了畅通无阻的通道。
In a healthy spine, the spinal canal has a rounded, triangular shape that provides an obstruction-free channel for the spinal cord.
一些基本形状，如圆形、方形、三角形和六边形都在自然界中以某种或其他形式出现。
Some primary shapes include circles, squares, triangles and hexagons all of which appear in nature in some form or another.
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