A more complicated system is, in general, more likely than a simple system to break down.

一般来说，一个更复杂的系统比一个简单的系统更容易崩溃。

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If even a few nations demur or cheat, the whole system can break down.

若再有一些国家出现反对或欺骗的情况，那么整个系统都将崩溃。

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Every month it appears more likely that the pay-TV system will break down.

每个月，付费电视系统似乎更有可能停止运转。

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Democracy is changing before our eyes - more elected posts, more voting systems, more choice as the two-party system continues to break down and, above all other things - more unpredictable than ever.

BBC: Elections - Reading the runes

Every month it appears more likely that the pay-TV system will break down.

ECONOMIST: The future of pay-television

In addition, he said, the background-check system tends to break down on weekends, when gun shows often swell traffic.

WSJ: Systemic Gaps Hinder Background Checks for Gun Purchases