我不知道这次幸福能保持多久英文怎么说

Wo bu zhi dao zhe ci xing fu neng bao chi duo jiu.

我不知道、这次幸福 能保持多久？
I do not know how long the well-being to maintain?
我知道、 这次的幸福 依然是短暂的
I know that this is still short-lived happiness

1. I'm not sure how long can this happiness last.

2. I know this happiness is still temporarily.

i have not the least idea of how long the happiness would be lasting.

i know this happiness is still short and temporary.