1. 单身

- 英语表达：single; unmarried; not in a relationship; living alone; bachelorhood

- 例句：He is still single.; He continues to live a bachelor's life.

2. 词典

- 英语表达：dictionary

- 例句：He refers to the dictionary for the meaning of certain words.

3. 单身女孩

- 英语表达：single girl; unmarried woman; bachelor girl

- 例句：There are single girls looking for partners among their fellow travelers.

4. 老年夫妇

- 英语表达：elderly couple; senior citizens in a relationship

- 例句：The elderly couple enjoyed their travels together.