For a long time biologists believed that male deer used buck rubs not only to clean and polish antlers but also to provide practice for the ensuing male-to-male combat during the rut.

长期以来，生物学家们认为雄鹿擦痕不仅可以清除并磨光鹿茸，还可以借此练习发情期时雄鹿之间的角斗。

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The new policy also recognizes that for a long time now only a minority of "adjustment" lending operations have been preceded by a crisis to which adjustment is necessary.

新的政策还认识到，在此之前很长一段时间内，只有在少数的“调整”贷款业务之前出现过必须予以调整的危机。

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I think it's important he is back on the field for Manchester United and back playing 90 minutes, and also gets his confidence back because he has been out for a long time.

我认为当他康复归来并得能为曼联踢上个90分钟的比赛，这才是重要的地方，这也能让他找回些自信，要知道他可是离开赛场不短的时间了。

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But it's also possible that long-term use of Tysabri alone is also dangerous when given for a long time.

FORBES: Tysabri Is No Vioxx

But he is also young and a good character, I think he can also improve and be a great player for a long time.

BBC: James Milner completes his transfer to Manchester City

These changes also have nice benefits that last for a long time, if not a lifetime.

FORBES: Connect