一些人担心可能后续的化学战。

Some people are worried chemical warfare may follow.

化学战的后果是很可怕的，危害很大。

The effects of chemical warfare are very terrible, causing great harm.

高效的化学毒剂满足化学战的必要而非充分条件。

Powerful chemical agents are a necessary but not sufficient condition for a chemical warfare capability.