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positive 积极乐观的

positivity 

The book had a positive influence on me.

这本书对我有积极的影响

optimistic 乐观的

optimist 乐观主义者

I'm feeling optimistic about our chances.

我对我们的机率感到乐观

upbeat 积极乐观的，愉快高兴的

How is it possible for you to always be so upbeat this early in the morning?

你是怎么可能大清早总是这么愉快高兴的？

always looks on the bright side

形容某人总能看到事情积极的方面

We try to hire people who always look on the bright side. We don’t want people’s negativity affecting our work.

我们试图雇佣能够看到事情积极一面的人。我们不想要消极的人来影响我们的工作

see the glass half full

形容常怀希望，积极乐观的人

have a glass-half-full attitude

Like many entrepreneurs, Gina had a tendency to see the glass half full.

正如许多创业家一样，Gina倾向于看到事物积极的一面。

see things through rose-colored glasses

形容用乐观的态度看待事物的人

She's always looked at life through rose-colored glasses.

她总是乐观地看到生活。

have a can-do attitude

形容采取自信、积极的态度面对挑战、问题的人

In job interviews, you want to do your best to let your can-do attitude shine.

在面试的时候，你要尽自己所能展示自己自信积极的处事态度。

not let anything get one down

不让任何事情打倒你

A lot of people told Melissa she’d never make a living as an artist, but she never let their comments get her down.

许多人都告诉Melissa，她绝不可能作为一名艺术家赚钱谋生，但是她从来不然那些评论打到她。