It is essential that a scientific worker know foreign languages.
科学工作者必须精通几门外国语。
What do you and an average scientific research worker have to differ
您和一个普通的科研工作者有什么不同吗？
Thoughts and Suggestions on Constructing Scientific Worker's Mutual Movement Room at Middle and Grade School
关于建立中小学科学互动室的思考与建议
Worker, debugging technician, maintenance technician, and salesman Shanghai Wufeng Scientific Instrument Co. Ltd.
上海伍丰科学仪器有限公司生产员，调试，维修员，销售
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