对于每一项，都要选择最简单的选项以符合你的需求。
And for each one, choose the simplest option that meets your needs.
必要时对技能进行验证和修订——对于每一项技能问下列问题。
Validate and revise the competencies as necessary - For each item, ask these questions.
对于每一项可取得的比较项目，我们进行随机效应统合分析。
Then, for each available comparison, we conducted a random-effects meta-analysis.
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