1. Being able to answer them on the fly gives you a real advantage over the crowd of in numerate amateurs. 能够飞速地回答这些问题，将使你获得一个位于无数业余交易者人群之上的优势。
2. As amateurs we compare ourselves to the highest standards: the professional photographs we see around us every day. 做为业余爱好者，我们经常会把自己与最高标准比较：即与专业摄影师去比较。
3. Most people who work in the field, and certainly all amateurs, have to have at least basic skills in numerous disciplines. 对于大多数从事这行的人来说，当然也包括业余人员，必须具备不同学科的基本技能。
