The current recommended second-line treatment regimens are complex, of long duration, and require intensive monitoring of adverse events and treatment outcomes.

目前建议采用的二线治疗方案程序复杂、疗程过长，并需要密切监测不良事件和治疗结果。

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The sealing face uses stainless steel and carbide alloy and is of long duration.

密封面采用不锈钢和硬质合金，使用寿命长。

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Therefore, ve is the better means to solve the long existing problems of long duration, high waste, unstable quality and high cost in architecture industry.

因此，价值工程是解决建筑业长期存在的工期长、浪费大、质量不稳定、造价高问题的较好办法。

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"I am particularly concerned by the long duration of unemployment faced by a great number of workers, and the disruptive impact that this long-term unemployment has had, and will have on these workers and their families.

VOA: standard.2009.04.03

House economists noted the sticky rate of long duration unemployment and the high share of part-timers.

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Rather, the 2010 QDR proposed to determine force sizing and composition by using the requirements of a diverse and complex set of scenarios, including long-duration stability operations and the defense of the homeland on par with a major regional conflict (MRC).

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Ditching the 1951 Fed-Treasury accord ending government control of bond yields, the Fed selected and purchased trillions of dollars in long-duration bonds and mortgages.

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