“偶发”造句
这是一桩
偶发的事件.
It was quite an accident.
事实已经很清楚，这件事不是
偶发的，它并不是一起孤立的事件。
It became very clear that the incident was not just an aberration, it was not just a single incident.
克雅氏病通常以“个例 ” 形式而且在50岁以下的人中
偶发.
In its common'sporadic " form, Creutzfeldt -- Jakob disease is rare in people under 50.