1. Incidentally , did you know that my uncle is visiting us?
    须便说一下，你知道我叔叔来看我们吗？

2. Furthermore, Gauss had an educated uncle who taught him sophisticated math at an early age.
    而且高斯还有个受过教育的叔叔，他在高斯很小的时候就教他复杂的数学。