As the backbone of our transport system, railway is a national economic artery.

铁路作为我国交通运输体系的骨干，是国民经济的大动脉。

youdao

The first: Railway is the country's vital infrastructure, the country's main artery, the popular means of transport.

第一篇：铁路是国家的重要基础设施、国家的大动脉、大众化交通工具。

youdao

O2 transport index (DO2I), O2 consumption index (VO2I), and the relationship between the two during early postoperative period were observed in 30 patients of coronary artery bypass grafting (CABG).

观察30例冠状动脉旁路移植术(CABG)后氧输送指数(DO2I)、氧耗指数(VO2I)及其关系。

youdao

Transport Minister Carl Sargeant called it "a crucial artery of our transport network and the principal road link between west Wales and the Midlands".

BBC: ?150m A465 Heads of the Valleys road project awarded

"The A465 is a crucial artery of our transport network and the principal road link between west Wales and the Midlands, " he said.

BBC: Safety hopes in ?150m Heads of the Valleys road plan