Obviously, any child who receives dedicated teaching over an extended period is likely to improve.

很明显，任何接受了很长时期用心教导的儿童都可能会进步。

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Other mechanisms would be more likely to have taken place more gradually, over an extended period, or at different times on different continents.

其他机制更可能是较为循序渐进的，在更长时间段或在不同的大陆上的不同时间发生。

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We set up a separate reliability test was to observe the server over an extended period of time.

我们创建了一个单独的可靠性测试，以在一个扩展的时期内观察服务器的运转状况。

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but over an extended period of time.

而是持续一段时间的事情。

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It may be that lower gasoline prices over an extended period can boost the national economy.

FORBES: Don't Cut The Gas Tax For Summer Holidays, Double It

Leveraged ETFs feature some of the most glaring naming mistakes when investing over an extended period.

FORBES: Why Leveraged ETFs Don't Always Boost Returns

Das helps people pay off their debts over an extended period while giving them protection from creditors.

BBC: Ministers plan changes to debt arrangement scheme