The camel has a single hump; The dromedary, two; Or else the other way around, I'm never sure. Are you?

The camel has a single hump; The dromedary, two; Or else the other way around, I'm never sure. Are you?

骆驼只有一个驼峰;单峰骆驼,两个;或者反过来，我也不确定。是吗?

-- Ogden Nash 奥格登·纳什