长期以来，狗一直被认为是人类最好的朋友，但多年来，它们确实证明了自身的能力。

Dogs have long been considered a human's best friend—but over the years they've really proved how skilful they can be.

youdao

有些国家自然资源丰富，但多年来遭受内战和外部战争，再加上一些其他原因，导致他们无法开发其资源。

Some countries are perhaps well off in natural resources, but suffered for many years from civil and external wars, and for this and other reasons have been unable to develop their resources.

youdao

但多年来我发现这是一个确保回到正轨重做快乐自我的很好的方法。

But what I have found over the years is that this is one sure fire way to getting back on track to my happier self.

youdao

These are very interesting results, but sort of the bias that everything should be done with white males that existed for many years hid some of these really interesting and important interactions that otherwise people didn't know much about.

这都是些值得关注的结果,但多年来对白人男性的研究带来的偏见,掩盖了这些有趣而重要的相互关系,人们对此知道得不多

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选