英语语法分析

And are they the harbingers of a broader bond-market bust?

其二，它们是否预示了更广泛的债券市场风暴？

Phytoplankton can also be the harbingers of death or disease.

浮游植物也可以是死亡或疾病的先兆。

And beware all who descend from those skies, for they are the harbingers of death and destruction.

同时要提防从那些天空下来的所有东西，因为那是死亡和毁灭的先兆。