这份报告是通过周密调查后写成的，因而应该可靠。
The report is written after careful investigation, so it should be reliable.
这份报告是经过周密调查后才写成的，所以应该是可靠的。
Thee report was written after a careful investigation, so it should be reliable.
这份报告是经过周密调查后才写成的，所以应该是可靠的。
The report was written after a careful investigation, so it should be reliable.
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