wust

例句：

1. 1. The old man was walking slowly, wust in the park.
   那位老人慢慢走着，在公园里。
2. 2.She had a lot of work to do, and she was wust about it.
   她有很多工作要做，对此感到焦虑不安。
3. 3.He was wust about his future, wondering what he could do to improve it.
   他对未来感到焦虑不安，想知道他怎样才能改善它。