构建专业知识和经验可能需要大量时间，但如今是时候开始了。

It takes time to build expertise and experience but a beginning has to be made.

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技术型作家通常拥有大学文凭，但是拥有相关专业知识和经验更为重要。

Technical writers generally have a college degree, but knowledge and experience with the technical subject is more important.

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在那里，他积累了专业知识和经验，并促成了对中国古新统进行的类似考察。

There he developed the experience and expertise that led to parallel exploration of the Paleocene in China.

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