There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.

对于为什么树线以上的树木会突然停止生长，至今还没有一个公认的解释。

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Some experts reacted with scepticism that the population would really hit the upper end of the predicted spectrum of growth and reach 15 billion so quickly.

一些专家对此持怀疑态度，他们不相信人口真的会如此之快地达到增长范围的预期上限——150亿。

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Industrial service providers and business partners can define constraints on resources for initial resource allocation and determine the upper limit for potential growth in future.

行业服务提供商和业务合伙人可以定义资源约束，用于初始资源分配，决定未来潜在增长的上限。

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There's been a huge growth in upper-end tourists coming to N.

FORBES: "We Weren't Hut People"

In more recent data from the Census Bureau, there was no growth in upper income levels in the past year and a modest decline below.

FORBES: Obama Exploits A Downturn To Engineer Us Socially

In fact, it was Brett Sturgess with a serious amount of growth on his upper lip doing a rowing session!

BBC: Clive Stuart-Smith column