Practice is the sole criterion for testing truth, but we should further study the process for practice to test truth.
实践是检验真理的惟一标准，但对于实践检验真理的过程，尚需进一步研究。
Based on the reference about domestic heritage tourism, this article summarized the research progress and major coverage about it, and discussed the question we should further study.
本文通过对相关文献的查阅和整理，对国内遗产旅游的研究进展及主要内容进行了总结，在此基础上探讨了我国遗产旅游应进一步研究的问题。
However, we should know that this is the case, and this we can learn only through further study.
不过我们仍需要进一步的研究来确认事实是否如此。
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