非洲在科学、技术、工程和数学领域失衡的原因往往被比作一根漏水的水管：女孩开始时充满了兴趣和天赋，但却在教育的各个阶段被迫退学。
The causes of Africa’s STEM gender imbalance are often compared to a leaky pipe: girls start out with interest and aptitude, but drop out of the disciplines at various points in their education.