N-COUNT
主干路；干线；要道
You can refer to an important main route within a complex road, railway, or river system as an artery .
例句
Clarence Street was one of the northbound arteries of the central business district.
克拉伦斯街是中央商业区北段部分的主干路之一。
...the point where the Ohio River, itself a great artery, joins the Mississippi.
本身就是一条主干河道的俄亥俄河和密西西比河的交汇处