And the more positive a doctor is when telling a patient about the placebo he is prescribing, the more likely it is to do that patient good.

并且在向患者描述疗效的时候，医生显得越积极，对于患者来说安慰治疗的疗效越好。

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Most likely, both sides will put on as positive a face as possible, but expect the acrimony to continue as both sides come to grips with an increasingly complicated relationship.

最有可能的是，双方将尽可能拿出积极的面孔，但由于双方要对付日益复杂的关系，预计激烈的争论将继续下去。

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I adopted a positive outlook on life.

我选择了一种积极的人生观。

《柯林斯英汉双解大词典》

Many doctors recognize that patients,like Daniel, with strong family support, a positive attitude and an active spiritual life have a greater chance to survive.

VOA: standard.2010.01.12

So, for example, if we were looking at the actual wave function, we would say that these parts here have a positive amplitude, and in here we have a negative amplitude.

我们看，一个波函数,我们说，它这部分幅值，为正,这部分幅值为负，当我们看。

麻省理工公开课 - 化学原理课程节选

And when we're talking about the amplitude of the wave, we're talking about the deviation from that average level. So, if we define the average level as zero, you can have either a positive amplitude or a negative amplitude.

当我们讨论一个波的振幅时,我们说的是偏离平均位置的量,如果我们把平均位置,定义为零的话，那幅值不是,正的就是负的，有时候人们在。

麻省理工公开课 - 化学原理课程节选

U.S. stock futures are pointing toward a positive open, putting stocks on track for a positive end to a rather eventful week.

FORBES: Futures Point to Positive Open, SPX and VIX Data Point to Trouble

And to the extent that this is a positive step -- a small step, but a positive step, that's a good thing.

WHITEHOUSE: Press Briefing

The Mets needed something positive a day after learning ace Johan Santana will likely miss the season with a re-torn left shoulder capsule.

WSJ: Mets' Wright makes first appearance in 2 weeks