We've got contrapuntal lines operating in it.

它里面有对位的旋律线。

In Rio de Janeiro, an extensive network of tram lines, including the Santa Teresa line, operated for more than a century.

里约有网络式的有轨电车分布线，范围极广，比如已经运行了一个多世纪的圣塔泰瑞莎线路。

This autumn an official review by Keith Williams, a former British Airways boss, will consider how to reform the franchising system under which most lines operate.

今年秋天，英国航空公司前老板基思·威廉姆斯的一份官方评估报告将考虑如何改革大多数航空公司运营的特许经营体系。