for aught I know

例句：

1. 1. I'll be there for you if you needme.
   如果你需要我，我会在那里。
2. 2. Hedecided to go for a walk after dinner.
   晚饭后，他决定去散步。
3. 3. Shewent for a swim in the pool.
   她在游泳池里游泳。