| 例句 |
Their position was no longer tenable and they retreated to the main line of defence.他们因阵地守不住而撤退到主防线。The spur branches away here from the main line.这条支线在这里与主干线分岔。(=branch off)The men were fighting forward of the main line of defence.士兵们在主要防线的前面作战。Their main line of work is orchestrating corporate mergers.他们主要的工作是组织策划公司合并。The west coast main line has been electrified.西海岸铁路干线已经电气化了。 |