Support for this idea came from the observation that long-lasting climax communities usually have more complex food webs and more species diversity than pioneer communities.

支持这一观点的是，长期存在的顶极群落通常比先锋群落有更复杂的食物网和更多的物种多样性。

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It's too early to tell whether Facebook-like features in the workplace will be a passing fad or a lasting trend, but IBM says it's eating its own dog food.

类似Facebook的社交网络功能在职场中究竟会成为一种经久不衰的潮流，抑或只是昙花一现？ 现在下定论还为时过早。

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One of the main crops of the Chaco people was grain maize, which could be stored for long periods of time without spoiling and could serve as long-lasting supply of food.

查科人的主食之一是玉米。玉米可以不宜变质，可长期储存，因此可以作为长期的食物来源。

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