I am lost in the middle ground. I'm learning.

我迷失在探索之中，我在学习。

youdao

Sitting alone, in my room, I am lost in thoughts.

我坐在房间独自沉思。

youdao

I know there will be a day when I am lost in my workout and I will sit on a bench without wiping it down.

我知道某一天，我可能在锻炼时全神贯注，不经擦拭一下子就坐到长椅上。

youdao

I am so sorry to hear that you lost your job.

我听说你失业了，真是遗憾。

I'm sorry 实战 - SpeakingMax英语口语达人

My missing suitcase housed my overnight essentials, without which I am lost: Egyptian cotton pajamas and a small electric fan for white noise.

WSJ: Traveler's Tale: On the Road Again, and Again, So Help Me

But if I'm wrong, and I pray God I am, what will I have lost, tell me?

NPR: E.L. Doctorow on Sherman and 'The March'

"I am disappointed that we lost the game, " he said.

BBC: SPORT | Rugby League | Challenge Cup | Leigh 40-20 Halifax