They must use research to inform themselves of the missing parts of the story.
他们必须通过调查研究，来使自己了解到被遗漏的那部分情况。
They must use research to inform themselves of the missing parts of the story.
他们应该通过研究找出故事中缺少的部分。
The surface should be smooth. No missing parts and obvious scratch lines.
表面应光滑，无缺料、无明显划线。
The surface should be smooth. No missing parts and obvious scratch lines.
表面应光滑，无缺料、无明显划线。
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