Go on a clear day. It's not about slippery roads for the test drive; it's that rain can hide scratches and other imperfections.

找个好天再去。这与试驾时路面湿滑无关；雨水可以掩盖划痕和其他缺陷。

In countries like Finland, it is expected to take new drivers at least two years to get their full licences – and it is mandatory to practice on slippery roads.

在芬兰等国家， 预计新司机至少需要两年时间才能获得正式驾照——而且必须在湿滑的道路上练习。