单词学习：rut 名词/动词
rut
/rʌt/
1. 车辙；凹槽 2. 常规；老一套 3. (雄鹿等动物的)发情期
Mr. Gu felt stuck in a rut with his daily teaching routine and decided to innovate his lessons.
顾老师觉得自己的日常教学工作陷入了老一套，决定创新他的课程。
单词卡片
卡片已就绪
