独自一人

One can habituate oneself to living alone, though rarely with any pleasure.

虽然独自一生活很少会有乐趣，可以习惯的。

I work more efficiently on my own.

我独自一工作效率更高。

He went to the bandits' lair all by himself!

他独自一闯了土匪。

I was alone with no money or possessions.

我独自一，没有钱，也没有财产。

He was alone in the house.

他独自一家里。

He was alone in the room.

他独自一里。

He was unhappy when alone.

他独自一时感到不快活。