What we need is a system, and that is what has been really lacking.

我们需要的就是这样一个系统，而这正是一直所缺乏的。

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If the system is rough on the outside (for example, lacking error handling and stability), the customer might become nervous about the team.s progress.

如果系统从外表上看是很粗糙的(比如，缺乏错误处理和稳定性)，客户也许会对团队的进度感到不安。

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Many Linux users are finding the dual-boot mode of using Microsoft Windows to be lacking in interoperability with their Linux system.

许多Linux用户发现Microsoft Windows的双引导模式缺乏与Linux系统的互操作性。

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Today's electrical system is a creaking relic lacking the sophisticated command-and-control tools necessary to ensure reliability.

ECONOMIST: MONITOR

With an estimated 43 million Americans lacking health insurance and a medical care system that eats up ever-larger percentage of the gross domestic product, health care remains an intractable issue.

CNN: AllPolitics - The Real State Of The Union - Health Care

And by allowing individuals to keep what they like or to shop around for new coverage, the public exchange gives Americans the much-needed stability and peace of mind that is currently lacking in our health care system.

CNN: Commentary: Health reform back on track