This thesis is divided into the following several part altogether: Introduction part: Explain background, research purpose and the thinking and frames of the meaning, research of subject research.

本论文共分为以下几个部分：导论部分：说明课题研究的背景、研究目的与意义、研究的思路与框架。

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All parties need to explain the background and evidence for their policies.

各党都必须解释其政策背景并提供证据。

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In addition the coach should explain their own background and their goal (s).

除此之外，敏捷教练应该介绍一下自己的背景和目标。

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The president then introduces Manchin and Toomey to explain their background check legislation.

CNN: Senate to start votes on gun bill

All parties need to explain the background and evidence for their policies.

ECONOMIST: Bagehot

He went on to explain the background to his thinking about the current situation in an essay in The Atlantic, Why There Are Too Many Patents In America.

FORBES: The Big Fix #3: How To Untangle The Mess With Software Patents