In the past few years, MathCounts added two new middle school programs to try to diversify its participant pool—the National Math Club and the Math Video Challenge.
出自-2017年6月阅读原文
In the past few years, Math Counts added two new middle school programs to try to diversify its participant pool—the National Math Club and the Math video Challenge.
2017年6月六级真题(第三套)阅读 Section B
柯林斯高阶英汉双解学习词典释义
VERB
增加…的品种;从事多种经营;(使)多样化
When an organization or person diversifies into other things, or diversifies their range of something, they increase the variety of things that they do or make.