全部

1·The Black Death of 1348 was caused by gradual loss of the humus fertility found under forest trees.

1348年的黑死病是由森林树木下腐殖质的逐渐丧失引起的。

2·This isn't the Black Death.

这又不是黑死病。

3·Finally, Europe caught the Black Death.

最终，欧洲得了黑死病。

4·When the Black Death broke out, few escaped.

黑死病爆发时，很少有人幸免。

5·Then, with the Black Death, it fell by a quarter.

接着爆发了黑死病，人口锐减了四分之一。

6·too many are the Black Death of community groups.

太多会议是社区组织的黑死病。

7·The Black Death.

黑死病。

8·Then, with the Black Death, it fell by a quarter.

接着，黑死病流行，人口锐减了四分之一。

9·Should the Black Death reappear, what should we do?

万一黑死病再次出现，我们该怎么办？

10·We do not know, however, how the Black Death travelled to Europe.

然而，我们并不知道，黑死病是如何被带到欧洲的。