求翻译：所谓“洋务”，是当时们对外国事物的概称，具体来说，“外事交涉，订条约等固然是办洋务，派遣留学生，学习外洋来的科学，购买洋枪洋炮，使用机器，开矿办厂，雇用外国军官，按照洋法操练军队等，也无一不属于办洋务的范围”。是什么意思？

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So-called “foreign affairs”, was at that time

The so-called "Foreign Affairs", is then said to foreign things, specifically, "foreign representations, the Treaty is, of course, such as Foreign Affairs, sent students, learning of a foreign country to science, buy yangqiang yangpao, used machines, mining factories, employing foreign military offi