surrounds n. 挡板;环绕物(surround的复数)
v. 围绕;包围(surround的三单形式)
- The Arctic is a polar region. It surrounds the North Pole.
北极地区是个极地的区域,它把北极围在。 - The rim of gas surrounds a nearly empty (but very hot) cavity, and over time the fast wind clears out an ever larger volume.
这层气体轮圈环绕著几乎空无一物(但非常热)的空腔,经过一段时间,快速恒星风便扫出广阔的体积。 - How much blackness surrounds a singularity – in effect, the size of the black hole – is defined by the strength of its gravitational pull.
事实上,奇点周围有多大一块黑暗区域,也就是黑洞的尺寸,是由它所产生的引力大小来衡量的。