It's true, I am at a loss.

我失去方向那时个事实。

youdao

I don't know what to do now, I am at a loss.

我如今完全不知道怎样办，我非常茫然。

youdao

I am at a loss as to how to do this and then merge to the default context.

我不知该如何做这个，然后合并到默认的上下文。

youdao

In short, I am at a loss.

FORBES: Magazine Article

Doctors say I am now at 85%, yet each day I am also confronted with a sense of loss.

CNN: Living with a 'borrowed brain'