Objective and rationale, including the nature of urgent problems where applicable: in order to improve protection for human safety and to harmonise with the international standard.

目标和理由：为了提高对人类安全的保护，并且与国际标准相协调。

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Chapter One concentrates on a general introduction to this study, consisting of its rationale, objective, methodology and layout.

第一章“引言”，介绍本文选题理由、研究目的、分析方法、结构布局。

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Objective To discuss the exact degree of filling root canal and the rationale of n-octyl-a-cyanoacrylate in root canal therapy.

目的探讨医用胶在根管治疗术中堵塞根管的密合程度及作用机制。

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But if the recent weakness in the dollar, run-up in commodity prices, and other forward-looking indicators are sustained and passed along into final prices, the Fed's price stability objective might no longer be a compelling policy rationale.

WSJ: Kevin W. Warsh: The New Malaise and How to End It