Not much of a hint, but looking at the history of the four rings, a trend of innovation (quattro), racing (R10 TDI, quattro) and design (original TT) emerges.
英
美
- 不大的提示,但看历史上的4个环,这一趋势的创新(四驱),赛车(R10赛车的TDI,四驱)和设计(原特)的情况。