single ticket

例句：

1. 1. This single ticket will take you to the top of the mountain.
   这张单程票将带你登上山顶。
2. 2.She's a single woman who lives alone in her apartment.
   她是一位独居的女性，住在她的公寓里。
3. 3. The single mother was struggling to make ends meet.
   这位单身母亲正在努力维持生计。