00:08:48,560　　可能出了点问题　　something wrong with our connection.　　176　　00:08:48,560 --> 00:08:51,930　　不　　我听得很清楚　　No, I hear you fine.　　177　　00:08:51,930 --> 00:08:56,060　　正如我刚刚说的　　普通磁铁有两个磁极　　As I was saying, an ordinary magnet has two poles.　　178　　00:08:56,060 --> 00:08:58,630　　磁单极子的主要特征是　　The primary characteristic of a monopole　　179　　00:08:58,630 --> 00:09:02,200　　它只有一个磁极　　因此称为磁单极子　　is that it has only one pole, hence, monopole.　　180　　00:09:03,730 --> 00:09:05,830　　弦理论　　或者说M理论　　A requirement for string theory,　　181　　00:09:05,830 --> 00:09:07,760　　的一个必要条件　　or M-theory, if you will,　　182　　00:09:07,760 --> 00:09:10,560　　是存在磁单极子" type="audio/mpeg" />-->