It's like a moveable feast; you put your explosion where you need it at any particular moment.

它就像一个万能贴,你可以把火山爆发,置于你所需要的特定时刻

耶鲁公开课 - 古希腊历史简介课程节选

You have, like lava emerging from a volcano, a rupture.

相反，就像岩浆从火山喷出一样，突然爆发。

耶鲁公开课 - 文学理论导论课程节选

The trouble is, you just don't know when that explosion took place, and since there are several periods in this general area that we're talking about now, in which something big happened, some great change takes place, it turns out different people want to have their explosion at different times.

问题是,你不了解火山爆发的,确切时间以及这种爆发,在这个区域又延续了很多个时期,这些时期发生了许多重大事件和重大变化,结果就是不同人对,火山爆发的时间推测各不相同

耶鲁公开课 - 古希腊历史简介课程节选