The question has to do with two words common in the business world, " internship" and " externship."

这个问题与商业世界中个词有关，“实习” 和“校外” 。

An " extern" – a person who works in an externship – usually works for a much shorter period of time.

“外人员”——在外人——通时间要短得多。

Sometimes an " externship" can be just one day or one week, whereas an " internship" is usually at least a month and often several months long.

有时“实习” 可能只有一天或一周，而“实习” 通至少一个月， 通长达几个月。