set on fire: 使燃烧
Dozens of people have been injured and many vehicles set on fire.
很多人受了伤，多辆车起火。
A post office was set on fire and vehicles were stoned by looters.
抢劫犯放火烧了一家邮局，并用石头砸车。

whack job: 【疯子whack: [美国俚语]略痴的人；怪癖的人】
Is he a genius or a whack job?
你认为他是天才还是疯子?

turn against: 背叛
Nothing could make me turn against my country.
什么也不能使我背叛我的祖国.
Why did they suddenly turn against you?
他们为什么突然转而反对你?

match made in heaven: 天生一对
This could very well bea match made in heaven.
所以这个球员和爵士可以说是天作之和.
You were a match made in heaven!
你们真天造地设的一对!