He went upstairs and knocked at the door.
他上楼敲门。
He went upstairs and knocked at the door.
他上楼敲门。
He had the rough edges knocked off him at school.
他在学校改掉了一些
。
It sounds as though there is a knock at the door.
听起来好像有人在敲门。
声明：
上例句、词性分类均由互联网
动生成，部分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
