Backstitching
n. 回针\\nv. 用回式针迹缝（backstitch的ing形式）
🗣️ 情景例句
We're strangers here; can you help us find ...?
我们在这里人生地不熟，您能告诉我们__在哪里吗？
Would you like me to get you a cab?
要我替你叫出租汽车吗？
An electric razor that meets the European Union's safety standards must be approved by American testers before it can be sold in the United States,
一把符合欧洲联盟安全标准的电动剃须刀必须得到美国检测人员的认可，方可在美国市场上销售；