产品生命周期有很多阶段，涉及多个专业科目，需要各种技能、工具和流程。
The product lifecycle has many phases, involves many professional disciplines, and requires various skills, tools and processes.
该专业科目包括心理学、社会学、技术指导、媒体、文化及相关科目。
Subjects include psychology, sociology, coaching, media and culture, and related topics.
最不受欢迎的三个专业科目为：微积分、运筹学和商务统计学(全为数学类)。
The most popular of the three specialist subjects are: calculus, operations research and business statistics (all math class).
笔者认为，在校大学生除必须完成专业科目的修习外，还应该继承和发扬祖国的传统优秀文化，并以此来丰富和提高人文素质。
In order to enrich and develop their humanism quality, I think students of colleges and students must not only learn special courses, but also inherit and develop our traditional excellent culture.
笔者认为，在校大学生除必须完成专业科目的修习外，还应该继承和发扬祖国的传统优秀文化，并以此来丰富和提高人文素质。
In order to enrich and develop their humanism quality, I think students of colleges and students must not only learn special courses, but also inherit and develop our traditional excellent culture.
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