But campaigners' optimism is tinged with caution.

但活动人士中带有一丝谨慎。

We should accept bad times with optimism.

我们应以态度接受阻逆。

Even upbeat words with positive associations can be tarnished and discredited.

即使是带有积极联想话语也会被玷污和抹黑。

Many folks see silver linings to this slowdown.

许多人于经济减速抱有希望。

It's a form of innate or unlearned optimism.

这是一种内在，无需学习主义精神。

President Donald Trump, in particular, has veered from unfounded optimism to attacking his foes.

尤其是唐纳德·特普总统已经从盲目转向攻击他反。

But then, according to researchers at University College London, human beings are naturally sanguine creatures.

伦敦大学研究表明，人类是天性生物。

I know I sound like a consummate optimist, but I'm really not.

我知道我起来像是一个完美主义，但我真不是。

Still, on the streets of the capital, there are signs of optimism.

但是在首都街头上，到处都是向上景象。

She has an optimistic outlook on life.

她具有人生。

Personally, I feel quite optimistic about it.

我个人而言，还是挺。

He would prefer to see more optimistic science fiction.

他更喜欢看一些科幻电影。

There are reasons to be optimistic.

实际上我们是完全有理由感到。

For example, a 2012 study showed that tickling rats increased their " optimism" .

例如，2012 年一项研究表明，给老鼠挠痒痒，能提升了他们“”感。

The Windy City has always been driven by an unshakable optimism and can-do attitude.

不变精神与积极进取态度， 一直驱动着「风城」芝加哥向前迈进。

Mr. Trump's upbeat mood could be a product of his medication.

特普情绪可能是他服药结果。

They're all building optimism by finding innovative and brilliant solutions to the world's challenges.

他们在寻找创新而精妙解决方案来应这个世界所面临挑战，同时为我们带来了展望。

Maybe start filling your Facebook statuses with more positivity and upbeat content.

也许是时候给你脸书状态添加更积极和内容了。

So, as you can see I've been thinking this way for many years.

所以 正如你所视我已经寻觅 这种思维方式很多年了。

But like their colonial ancestors, Americans are essentially an optimistic people.

但是像殖民时期祖先一样，美国人是非常人民。