反斜线

例句：

1. 1. The book is divided into two parts with a line separating them.
   这本书分为两部分，用一条线分隔开。
2. 2. He crossed the street with care, using a double-edged sword for protection.
   他小心翼翼地穿过街道，用双刃剑作为保护。
3. 3. The sentence ends with a question mark, indicating uncertainty.
   句子以问号结束，表示不确定性。