They are radial threads that join up at the center of the web.

这些呈线在网中间汇集。

The rays of dusty ejected material extends some 900 miles from the Tycho impact site.

喷物质从第谷碰撞点向外延展了900英里。

His sapho-stained lips were drawn into a straight line with radial creases spreading upward.

他染上了紫红色嘴唇被拉成一条直线，皱纹向上蔓延。

Here is the " kilometer zero" from which all the country's radial roads start.

这里是全国所有公路起点“零公里”。

And when that explosion happened as with many other craters it shot out jets of bright powdery dust, so that these rays that got out from it were very stripy.

当它爆发时，就像其它许多弹坑一样，喷明亮粉尘，所以这些喷发条纹很清楚。

So, as odd as the starfish body plan seems, something about it was successful -- from their ancient bilateral ancestors, to the radial crinoids with their upward-facing arms, to the predatory, downward-facing starfish.

因此， 尽管海星身体计划看起很奇怪，但它某些方面是成功——从它们古老双侧祖先，到手臂朝上海百合，再到捕食性、面朝下海星。