他们的家庭命途多舛，但依然保持乐观。

Their family has suffered many a setback during their life, but they remain optimistic.

保持乐观，相信这一切都会过去。

Remain optimistic that this too shall pass.

但他和他的妻子正努力保持乐观。

But he and his wife are trying to remain optimistic.

保持乐观。领袖都是乐观向上的。不论你在学校的什么领域感兴趣，面对任何事情都保持乐观。

Be optimistic. Leaders must be optimistic. In whatever area of interest you have at your school, always remain optimistic in any situation that comes your way.

面对挫败，她依然保持乐观。

Despite the defeat, she remained optimistic.

面对绝境，她依然保持乐观。

She remained optimistic in a hopeless situation.

面对艰辛，他总是保持乐观。

He always stays optimistic in the face of hardship.

我们需要在逆境中保持乐观。

We need to stay optimistic in the face of adversity.

他在癌症末期时仍然保持乐观。

He remained optimistic even in the late stages of cancer.

他总是对未来保持乐观态度。

He always maintains an optimistic attitude towards the future.