The powder immediately ignited and set off a chain reaction of explosions.这种粉末立即燃烧, 并引发连锁爆炸。

Every diagnosis of dementia invariably sets off a chain reaction at home.每一例痴呆的诊断总是会在家庭内激起一连串波澜。

A group of girls set off a chain reaction of hysteria and prejudice when they accuse certain people of witchcraft.一群女孩子指责某些人摆弄巫术, 从而引发了一连串过激反应和偏见。