Think over again what your subject and purpose are, and what kind of material you have found.

再三考虑你的主题，目的和你已寻得的材料种类。

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"When it is all said and done, I think it is time for a 'do over'. We need to start this budget process all over again.

VOA: standard.2009.03.24

Tim Harford has a fascinating excerpt from his new book available that makes a point that I think deserves being made over and over again.

FORBES: The Importance of Long-Term, Speculative Research

"One of the things I do is think about something over and over and over again, and that's when I start writing, " he said.

CNN: Experts ponder link between creativity, mood disorders

If Sunderland thought their run of bad luck was over, they were made to think again when Liverpool were awarded a penalty.

BBC: Sunderland 0-2 Liverpool