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Second, is to have a upgrade their knowledge and technical skills of the course.
第二，就是要有一个提升自己知识，技术技能的过程。
youdao
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Keep technical skills and knowledge up to date.
保持技术技能和知识的更新。
youdao
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Keep technical skills and knowledge up to date.
保持技术技能和知识的更新。
youdao