单词学习：filed 动词 (过去式/过去分词)
filed
/faɪld/
1. (动词file的过去式和过去分词) 提交，归档；2. 排成纵队行进
The important documents were filed by Ms. Gu for future reference.
这些重要文件由顾老师归档以备将来查阅。
单词卡片
卡片已就绪
