any of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body
动脉。比较
an important route in a system of roads, rivers, or railway lines
(公路、河道或铁路中的)干线
-
George Street, main artery of Edinburgh's Golden Mile. 乔治大街是爱丁堡黄金大道的主要路段。
"late Middle English: from Latin