Design improvements in the computer system have greatly increased our efficiency.电脑系统设计上的改进大大提高了我们的效率。We patterned our road system on theirs.我们的公路系统是照他们的系统设计建造的。The new software system is really smart and it's much quicker to use too.新的软件系统设计得真巧妙，用起来速度也快多了。