所有组织的活动都受到两种型式的限制:一个是垂直,另一个即是水平界限(horizontal boundary)。 对同一产业中不同企业而言,他们垂直界限可能不同,同时他们的水平界限也很可能不同。
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当经济学人出版时,美国债务界限将升到什么水平,持续多长依然不明朗。
As The Economist went to press, it still was not clear on what terms America's debt limit would be raised, and for how long.
主要原因是男子的睾丸功能与女性的卵巢不同,没有一个明确的终止界限,同时,健康老年男子的血浆T水平有较大的个体差异。
The main causes are that the decrease of testicular function with aging is of a progressive course without a cut-point, and the serum level of T in the aging male has markedly individual variation.
大学教育水平,第二件重要的事更微妙些,就是去发现不同方式使用技术来伸展,此对于在麻理学习的意义的界限。
The second is something a little more subtle and that is to find different ways to use technologies to basically stretch the boundaries to What it means to learn at MIT.
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