rough-BNC²³⁶²¹³⁺¹ 例句 It had already attained this noble status when Theodore Roosevelt was still a rough- riding cowboy in North Dakota. 当西奥多·罗斯福还在北达科他州当驯马牛仔的时候，象牙香皂就已经拥有目前这种崇高的地位了。 jukuu The upshot result is that nuclear fusion can happen using rough-and-ready lasers and rough- and-ready fuel. 结果就是利用简单的激光和一般的燃料，就产生了核聚变。 ecocn