在进阶规则的轮胎规则里有这么一句:在选用“硬胎”时:
If it is raining, the car moves three additional spaces, provided at least one space included in the move lies within the limits of a corner.
就是说在雨天用硬胎要额外移动3步,那后面的那句“provided at least one space included in the move lies within the limits of a corner.”是什么意思?