Some San Jose residents say that as inequality has grown in recent years, upward mobility has become much more difficult to achieve.

圣何塞的一些居民表示，随着近年来不平等现象的加剧，实现向上流动变得更加困难。

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Private equity has piles of unallocated capital, although it has become much more difficult to wrest undrawn funds from investors.

尽管它越来越难从投资者那里获得那些不打算取回的资金，私人股本仍然怀揣大量无处可投的资金。

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Moreover, the processing of vibration signals has become much more difficult because a full-of-oil complex gearbox system has been considered to record raw vibration signals.

此外，因为一个复杂的齿轮箱系统被用来记录原始的振动信号，因而振动信号的处理就变得更加困难。

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The glaciers are retreating and if the separate colonies are allowed to mingle, eradication will become much more difficult.

BBC: South Georgia rat cull begins again

Secrets have become much more difficult to keep in the age of social media, even if bullets remain just as deadly.

FORBES: The Mutual Knowledge Revolution

Bankruptcy stays on your record for seven to 10 years, and you'll find you are very limited in what you can do--simple things like renting an apartment or insuring a car will become much more difficult.

FORBES: Magazine Article