历史记录中有一段明显的断层。

There is a noticeable ___discontinuity in the historical records.

地震导致了地质记录中的明显间断。

The earthquake caused a clear ___discontinuity in the geological record.

他的演讲中思想和论据之间缺乏连贯性。

There was a noticeable ___discontinuity between his ideas and the evidence in his speech.