单词学习：fetter 名词/动词
fetter
/ˈfetər/
脚镣；束缚；羁绊
The strict rules of the school acted as a fetter on Ms. Gu's creative teaching methods.
学校的严格规定成了顾老师创新教学方法的束缚。
单词卡片
卡片已就绪
