1. Learning and knows no studies beyond servo- systems and distributors, compression ratios and camshafts.
    这些人对学习毫无兴趣, 而且除了伺服系统, 配电盘, 压缩比和凸轮轴便一无所知.

2. Learning and knows no studies beyond servo- systems and distributors, compression ratios and camshafts.
    这些人对学习毫无兴趣, 而且除了伺服系统, 配电盘, 压缩比和凸轮轴便一无所知.