单词great-vowel-shift
网络: 元音大推移；元音大转移；元音大变位
Known as the Great Vowel Shift in the history of English, these changes involve seven long, or tense, vowels.
这些变化在英语史上被称为元音大变位，涉及七个长元音，或紧元音。
The effect of the Great Vowel Shift was to make the pronunciation widely acceptable today.
那次“主要元音转移”的效果是使发音能被今天所广泛接受。