Global expansion through acquisition is usually expensive, and expansion through internal growth is time-consuming and sometimes impossible in markets that are not actively growing.

通过收购实现全球扩张通常代价高昂，而通过内部增长实现扩张则非常耗时；在那些没有积极增长的市场上，实现扩张有时甚至是不可能的。

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Continued bombardments and internal pressures made the growing Earth hotter, causing its interior to melt and the heavier elements to sink and form Earth's core.

持续的轰击和内部压力使成长中的地球越来越热，导致其内部融化，较重的元素下沉形成地核。

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Thanksto the growing use of these tools, the economic advantage of internal R&Dover external efforts is being reversed in industry after industry.

由于这些工具的使用变得日益普及，在产业类别日新月异的今天，内部研发相比于外部努力已不再具备经济优势。

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Even so, internal natural gas demand is growing by 9% a year.

FORBES: Magazine Article

Both internal trade and exports are still growing at rates of nearly 25% a year.

ECONOMIST: Central America opens for business

While these internal markets are rare, a growing body of research suggests that giving employees a voice in decision-making, from performance assessment to idea generation, tends to result in higher employee satisfaction even, in some cases, greater profitability and productivity, according to USC's Mr. Lawler.

WSJ: My Colleague, My Paymaster