a person who is expected to perform a particular task but who is out of control and dangerous

some of walsh「s higher-ups at division, however, worried that he was a loose cannon - and this latest mission hadn」t dissuaded them from that notion.

不过在ctu所属的部门里，沃尔什的一些上司担心杰克是一门失去约束的大炮，随时会误伤自己人——最近的一次任务丝毫不会改善他们的这种看法。

part of the reason was quality control: by definition, an easter egg is an untested feature. it「s a loose cannon that could, in theory, interfere with other, more important parts of the program.

原因有三，第一个原因，是出于质量控制考虑：严格说来，彩蛋是一段未经测试的程序，理论上来讲，它可能会对整个程序中其他重要的功能代码产生影响。

he is a very dangerous loose cannon .

他是个很危险的冒失鬼。

they don’t like people who rock the boat, and i could be seen as a loose cannon to some, because i’m questioning a lot of things.

他们不喜欢别人破坏良好的现状，我可被看作是我行我素不计后果的人，我对很多事都提出质疑。

arab elites came to view him as a loose cannon and a dangerous crank.

阿拉伯的精英逐渐把他看成一个大炮简子和危险的怪人。

peter is seen as something of a loose cannon by other team members.

团队的成员都觉得彼得是一个举止无法预料的人。

she」s widely regarded as a loose cannon by those in the company.

公司里的人普遍都认为她是一个爱招惹麻烦的人。

i know this guy is a smart political worker. but he「s hard to control. in fact, he」s a loose cannon who might do more damage to our side than the man i'm running against.

这句话的意思是：「我知道这家伙在政治工作方面很聪明．但是，这个人很难控制．实际上，他就好像是一个没有约束的大炮，给我们造成的危害可能会比我的竞选对手造成的危害更大。」

mark latham also said ms gillard would have been better off giving mr rudd the foreign affairs portfolio to prevent him from being a loose cannon in brisbane.

莱瑟姆说，她也将得到更好的吉拉德给予了陆克文的外交事务组合，以防止从一个松散的大炮他在布里斯班。

some loose cannon in the state department has been feeding the press all sorts of crap as a diversion.

国务字中某个好咋呼的人一直在给新闻界提供各种各样乱七八糟的消息，以便转移视线。