Since 2003 the small, elite liberal arts school in Brunswick, Maine, has boosted the proportion of so-called under-represented minority students in entering freshman classes from 8% to 13%.
出自-2011年6月阅读原文
柯林斯高阶英汉双解学习词典释义
VERB
使增长；推动；改进；使兴旺
If one thing boosts another, it causes it to increase, improve, or be more successful.