For journal articles, the researchers looked at changes in language over a period of years.
对于杂志论文，研究人员需要好几年的时间分析语言的变化。
It is often a lingua franca of conferences, for example, and many journal articles in fields as diverse as astronomy, child psychology and zoology have English as a kind of default language.
例如，英语经常是各种会议的通用语，天文学、儿童心理学和动物学等领域的许多期刊文章都将英语作为一种默认语言。
The theory was laid out in a series of articles on euthanasia for a German journal, Medicine and Law.
这一理论在给德国《医学与法学》杂志的一系列关于安乐死的文章中被阐述。
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