单词学习：bowed 形容词/动词过去式
bowed
/baʊd/
鞠躬的；弯曲的；弓形的
The students bowed respectfully to Teacher Gu as he entered the classroom.
当顾老师走进教室时，学生们恭敬地向他鞠躬。
单词卡片
卡片已就绪
