Sometimes they make trouble, but sometimes they can help us.
有时他们会制造麻烦，但有时他们可以帮助我们。
但有时也发火。
有时则不然。
But sometimes they are employed, too.
但有时她们也被雇佣啊。
But sometimes they must get rather nervous.
但是有时候他们肯定会变得相当紧张。
Sometimes friendships naturally arise, but sometimes they don't.
又是友谊会自然的产生，但是有时候是需要努力的。
But sometimes they will use some shortcut to reach their goal.
但有时他们也会走一些捷径来达到他们的目标。
Male primates play with the young, but sometimes they try to kill them.
雄性灵长目动物陪自己的孩子玩耍，不过有时候它们会试图杀死幼仔。
But sometimes they do not have a full understanding of healthy life.
但有时却并没有充分认识健康的生活。
But sometimes they offer some useless proposals, it's awfully useless.
但是他们有时候交上来一些没用的提议，非常没用。
Doctors help others, but sometimes they do it only so they can become rich.
医生帮病人看病，但有时他们这么做只是为了让自己变得富有。
Sure, it would be better if things went according to plan, but sometimes they don't.
当然，如果事情都按照计划进行会更好，但是事情有时并不会这样。
Rewards work under some circumstances but sometimes they backfire. Spectacularly.
奖励在一些情形下有用，而在一些情况下却会适得其反。
Colleague: But sometimes they offer some useless proposals, it's awfully useless.
同事：但是他们有时候交上来一些没用的提议，非常没用。
But sometimes they collide, in that they provide rival explanations for the same phenomena.
但有时它们也是相互冲突的，因为它们针对相同的现象提出了对立的解释。
We won't be using them a great deal in these tutorials, but sometimes they are invaluable.
我们不会在这些教程使用它们，但有时他们是无价的。
There's nothing diagnosable, but sometimes they just need a place to express their distress.
他们并不需要什么诊断，有时候，他们只是需要有个地方来发泄一下忧虑的情绪。
Although officers were very strict with us when in training, but sometimes they would show their kindness.
教官们虽然在训练时很严厉，但是有时却表现出他仁慈的一面。
Most of the dolls and accessories we use are ours, but sometimes they are provided by friends and colleagues.
大多数的娃娃及配件都是我们自己的，有时候朋友和同事会提供。
Sometimes they do, but sometimes they don't - no one knows enough to predict what will happen this time around.
有时候，事实确实如此。但有些时候，却不是——没有人可以充分地了解这些，目前还不足以预测这次将发生什么。
They also tend to have a creative streak but sometimes they display an escapist attitude and impractical nature.
他们还充满创造力，但有时会表现出逃避现实或不切实际的一面。
Usually they will target a film first, and set out to see that, but sometimes they will just go and choose when they get there.
通常他们会看中一部影片，然后确定要不要观看，但有时也会到了影院才决定看什么。
Typically these should include main characters and a representative scene from that film but sometimes they are too exaggerated.
一般应包括影片的主角和代表性场景，但有时它们显得过于夸张了。
Ichiro Suzuki and Hideki Matsui are baseball heroes, but sometimes they seem like superhuman demi-gods living on a higher plane.
铃木一朗和松井秀喜是棒球英豪，但是更多的时候，他们就像是神一般高高在上地存在于我们的心中。
Outdoor advertising usually does not trigger a reaction in teenagers, but sometimes they will oppose it (the Benetton baby adverts).
户外广告通常不能引起青少年的注意，但有时他们会反对它(如Benetton的婴儿广告)。
It seems like common sense that foods labeled "sugar free" would have no effect on sugar levels in the blood. But sometimes they do.
食物上只要标明“无糖”，就不会影响人的血糖含量，这似乎是一个常识。但有时血糖含量还是会收到影响。
It seems like common sense that foods labeled "sugar free" would have no effect on sugar levels in the blood. But sometimes they do.
食物上只要标明“无糖”，就不会影响人的血糖含量，这似乎是一个常识。但有时血糖含量还是会收到影响。
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