单词学习：substantially 副词
substantially
/səbˈstænʃəli/
adv. 大量地；实质上；大体上
The teaching methods introduced by Mr. Gu have substantially improved the students' learning efficiency.
顾老师引入的教学方法，极大地提高了学生的学习效率。
单词卡片
卡片已就绪
