shuāng guǐ
意思解释：（Double track）指铁路复线，有两组平行的轨道。 借指并行的两个系统。参见“双轨制”。
能同时相向行进的复线铁路。常用来比喻同时用两种方法做事或有两种并行的系统。〖组〗铺设双轨/实行双轨制/双轨铁路〖句〗南京长江大桥分两层，底下一层是火车道，铺着双轨，上面一层是公路，公路两边是人行道。/学校收费实行…
Can at the same time to the multiple track railroad that advance. Commonly used the system that will the analogy works with two kinds of methods at the same time or two kinds run paralell. Double track of laid of 〖 group 〗 / execute double track to make / 〖 of double track railroad sentence big bridge of 〗 Nanjing the Yangtse River divides a layer, next one is igneous driveway, laying double track, above one is highway, highway both sides is footpath. / the school collects fees execute...
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