fire这个单词都有什么含义？特别是什么积极的含义吗？

fire: [ 'faiə ]

n. 火,火灾,射击
v. 点燃,解职,开枪

例句与用法:
1. He was fired by his boss.
他被他的老板解雇了。

2. She fired her gun at them.
她用枪向他们射击。

3. A cigarette thrown into the woods in dry weather may start a fire.
在天气干燥时把点燃的香烟扔进树林可能会引起火灾。

4. The government is under fire from all sides on its economic policy.
政府在经济政策上受到各方的严厉批评。

5. The house is on fire!
房子着火了！

6. The engine is only firing on three cylinders.
这发动机只有三个汽缸工作。

7. He fired several shots (at the target).
他向目标射出了几发子弹.

8. `I've got a couple of questions I'd like to ask you.' `Right, fire away.'
‘我有几个问题想问你.’‘好, 你说吧.’

英英解释:
名词fire:

1. the event of something burning (often destructive)

2. the process of combustion of inflammable materials producing heat and light and (often) smoke
同义词：flame, flaming<