Backstitching
n. 回针\\nv. 用回式针迹缝（backstitch的ing形式）
🗣️ 情景例句
I enjoyed myself very much.
我玩得很开心尽兴。
A man cannot whistle and drink at he same time.
一心不能二用。
Where's your homework, Jim?
吉姆，你的家庭作业在哪儿？