unusual/ʌnˈjuːʒʊəl/
adj.1. 罕见的；不常见的an unusual hat不寻常的帽子
It is quite unusual for a freshman to be younger than eighteen or older than nineteen.一年级新生小于十八岁或大于十九岁是相当特殊的。
2. 与众不同的The most unusual car was a Benz which had only three wheels.最奇特的小汽车是一辆只有三个轮子的本茨牌小汽车。
Captain Ben Fawcett has bought an unusual taxi and has begun a new service.本.福塞特上尉买了一辆不寻常的出租汽车，并已开始一项新的营业。