有些旧型号汽车可能不好买配件。
It can be difficult to get spares for some older makes of car.
汽车制造公司必须有如何生产不同型号汽车的设计图或蓝图，对吗？
Farhana : The car manufacturer company must have some designs or blue prints for each different model of car which they follow, right?
我们不停地试新点子，在试车跑道上试验各种新型号汽车。
We were continually playing with new ideas and trying out models on the test track.
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