(23)Our course is due north.

　　我们的路线是笔直向北。

　　(24)Draw a map of Africa and show the courses of the chief rivers.

　　15、line 通常指运输路线(如公路，铁路，航线等)，也可表示铁轨。

　　(25)The company will open a new bus line.

　　(26)A new line over the mountains will be laid down.

　　16、ring 指圈状路线。

　　(27)The elves danced in a ring.

　　小矮人们排成一圈跳舞。

　　17、pavement(英)　sidewalk(美)指人行道。

　　(28)There were crowds on the pavements and roads everywhere.

　　18、street 指乡村，市镇，城市中的街道，两旁均有房屋。大城市中纵横相交的街道，东西者称为street.

　　(29)Which street do you live on/in?

　　19、avenue 指著名的大街，两旁有漂亮的住宅或树木。大城市中纵横相交的街道，南北称为avenue.

　　(30)Have you ever been to New York’s Madison Avenue?

　　20、highroad(英)highway(美)指公路，或水上，陆上或空中的交通干线。

　　(31)The river was the only highway for commerce.

　　21、motorway(英) expressway(美) freeway(美)指高速公路。

　　(32)New motorways will not solve the problem if traffic continues to increase at the present rate.

　　22、railway(英)railroad(美)指铁路。

　　(33)The railroad is now being constructed.

　　23、subway(英)指穿越马路，铁路供人行走的地下过道，(美)指市区地铁。英国地铁称：underground 或者tube.

　　(34)Please cross by the subway.

　　24、drive 指从在园中通到房屋的车路或树林中开辟的通路。

　　(35)He built a drive to his house.

　　25、tunnel指穿越山、河，城镇供车辆通行的隧道，地道。

　　26、channel指水道，航道，渠道。

　　(36)The captain kept his ship to the channel.

　　(37) These irrigation channels are very effective.

　　这些灌溉渠很有效。