包围

Based on the hierarchical express of tool and workpiece, overlapping test between OBBs and octants of the surfaces octree with the separation axis theorem is implemented.

在对主轴头、刀具体和被加工工件进行层次化近似表示的基础上，运用分离轴理论实现了对主轴头及刀具体包围盒和工件八叉树节点之间的相交测试。

Sac filled with serous fluid that encloses the heart and the roots of the aorta and other large blood vessels.

层，其间充满了包围着绕心脏、大血管的根部和其它大血管的浆状液体

The membranous sac filled with serous fluid that encloses the heart and the roots of the aorta and other large blood vessels.

心包囊状膜层，其间充满了包围着绕心脏、大血管的根部和其它大血管的浆状液体

Leaf blade margin serrate; bracts not enveloping inflorescence in bud, lanceolate; shrubs or small trees.

叶片边缘有锯齿；苞片不在芽中包围花序，披针形；灌木或小乔木。

This is a terrorist siege of India.

这是印度面临的恐怖包围。

For some time now, we have been under siege by an evil power that I cannot identify.

从之前一段时间开始，我们已经被一股邪恶的力量所包围，而我们甚至不知道那是什麼。

Now, they are under siege.

现在，他们正在包围。

I was surrounded by sky-blue silk and polished lacquer.

我被天蓝色的绸子和光亮的漆器包围著。

Explanation: Dusty stellar nursery RCW 49 surrounds young star cluster Westerlund 2 in this remarkable composite skyscape from beyond the visible spectrum of light.

说明：在这张用不可见光波段拍摄的显著合成影像中，模糊恒星孕育场 RCW49包围着年轻星团 Westerlund 2。

Romania is surrounded by Slavic countries, so it isn't surprising that their vampires are variants of the Slavic vampire.

罗马尼亚是一个被斯拉夫包围的国家，然而罗马尼亚人并不对他们的吸血鬼可能是斯拉夫吸血鬼的变形而感到惊讶。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！