West Nile virus is surrounded by an icosahedral capsid, which is a spherical protein shell made up of 20 equilateral triangular faces.

西尼罗河病毒有正二十的衣壳。

Moving on to the icosahedral viruses, which are made up of equilateral triangles fused together in a spherical shape that fully encloses the genetic material.

而有的病毒呈二十称，其衣壳由合成球形的角组成，完全包裹住了遗传物质。

They are naked viruses, about 30 nanometers in diameter, and they’re surrounded by an icosahedral capsid, which is a spherical protein shell made up of 20 equilateral triangular faces.

它们是直径约30纳米的裸露病毒，被二十衣壳包围；二十衣壳是由20个角形组成的球形蛋白质壳。

Human herpesvirus 8 is a large double stranded linear DNA virus surrounded by an icosahedral capsid, which is a spherical protein shell made up of 20 equilateral triangular faces.

人类疱疹病毒8型是种巨大的双链DNA病毒，其外由一个二十的衣壳包围，其衣壳是由20个角形组成的球状蛋白壳。