在撰写留学答辩的结尾时，你可以遵循以下结构来组织你的结束语：
感谢：
首先，表达对答辩委员会、导师、同学以及家人的感谢。感谢他们给予的机会和支持。
总结：
简要总结你的研究成果，包括研究方法、主要发现和贡献。
展望：
展望未来，可以提及你希望在研究领域中进一步发展的方向和目标。
提问：
可以询问答辩委员会是否有任何问题，以展示你对论文内容的自信。
结束语：
用一句简洁的话结束你的答辩陈述。
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Thank you very much for your attention and for the opportunity to present my work here today. I would like to express my gratitude to my advisor, my committee members, and my fellow students for their support and valuable feedback. During my research, I have explored [summarize your research topic and findings]. I have used [mention your methodology] to address [state the research question or problem]. My findings contribute to [mention the significance of your work]. Looking ahead, I am excited about [describe your future research plans and goals]. I am also open to any questions or suggestions you may have. Thank you again for your time and consideration.
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请确保你的语言礼貌、专业，并且与你的答辩内容紧密相关。祝你答辩顺利!