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写文章必须追溯六经的源头,并参考诸子百家和史书的写法。
Policymakers should be open to revising their views based on new evidence.
信任是每一段牢固商业关系的基础,尤其是在石油和天然气这样复杂的行业中。
The key to progress in science is persistence and an open mind.