I can't be positive about what time it happened.
我说不准这事是什么时间发生的。
Can you be positive about what you saw?
你能肯定你看得真切吗？
Be positive, happy, and love life!
积极、快乐、热爱生活！
Could be positive or negative.
可以为正或负。
The tension may be positive or negative.
这种张力可能是积极地也可能是消极的。
So choose to be positive in everyday tasks.
因此积极面对每天。
The sign could be positive or negative.
这个符号可正可负。
Smile, be positive, and notice what's right.
微笑，积极，然后关注正确的事情。
The CSI effect can also be positive, however.
CSI效应也可以是积极的。
Be positive in life, and do the right things.
积极对待生活，做正确的事情。
Be positive and try to help the person change.
积极地去帮助他人改变。
The person we make must be positive to life.
我们结交的人必须对生活积极向上。
These labels can be positive, negative or neutral.
这些标签可能是“积极”“消极”“中性”。
That would hardly be positive for stock markets.
这对股票市场来说，很难确定。
"I think we have to be positive," said the Spaniard.
我想我们必须积极起来。
We could have done it but have to be positive now.
我们本可以成功的，但我们现在必须要乐观。
Be positive: stop thinking about the future and failing.
保持乐观：不要过多考虑未来和失败。
Here it will be positive because it is going out of the region.
这里是正的，因为是流向外部的。
Likewise, it's easier to be negative than it is to be positive.
同样，否定也比肯定更容易。
Try to be positive at all times, even when things are at their worst.
所以即使在最糟糕的情况下，也尽量使你对孩子的态度积极一些。
Electron affinity, however, can be either negative or it can be positive.
但是，电子亲和能既可以是负的，也可以是正的。
Therefore, we should be positive toward life, so as to get happiness.
因此，我们应该积极的态度对待生活，从而得到幸福。
Thus, it should be positive to present the original Shenzhen to the world.
那么，我们难道不应该积极的向世界展示这样一个深圳吗？
"All of the evidence suggests we have reasons to be positive," he said.
“所有的证据表明，我们是有理由如此肯定的，”他说。
"All of the evidence suggests we have reasons to be positive," he said.
“所有的证据表明，我们是有理由如此肯定的，”他说。
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