single engine短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 单机牵引 And the single engine design limits the future development of Mirage2000. 单发设计也大大限制了幻影2000未来的发展余地。 yhsk That feeling is wearing off. Fewer than a quarter of the promised jobs have materialised and not a single engine has rolled off the production line. 然而只有不到承诺的四分之一的工作机会被创造出来并且连火车头都没有见到，大家的热情逐渐被消磨掉了。 renren