1·This reflects the steady progression of the African footballer, says Steve Bloomfield, author of "Africa United", a portrait of the game on the continent.
“这展示了连续表现稳定的非洲球员，”史蒂夫•布卢姆菲尔德，《非洲足球联队》的作者，“和非洲大陆上足球运动的一次生动描写。”
2·With a minimum of mathematics and an engaging, highly rewarding style, Bloomfield provides in-depth discussions of harmonic regression, harmonic analysis, complex demodulation, and spectrum analysis.
由于最少的数学和担保，非常令人满意的风格，布卢姆菲尔德提供谐波回归，谐波分析，复杂的解调和频谱分析的详细的讨论。