________________________(由于投资少), our industrial output has remained stagnant. 2. The Planetary Gear System arrangement is _________________________(被称作一项伟大的工程设计). 3.The solar cell can___________________________________(把阳光的能量转化为电能). 4. The designer used a lot of sketches on the early stages_____________________________________________________________________.(尽管他知道整个设计过程都可以用到CAD) 5.I gave him full directions to____________________________. (好让他能找到房子)