loose cannon

音標發(fā)音

Arab elites came to view him as a loose cannon and a dangerous crank.
阿拉伯的精英逐漸把他看成一個大炮簡子和危險的怪人。
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.
不過在CTU所屬的部門里，沃爾什的一些上司擔心杰克是一門失去約束的大炮，隨時會誤傷自己人——最近的一次任務(wù)絲毫不會改善他們的這種看法。
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，第一個原因，是出于質(zhì)量控制考慮：嚴格說來，彩蛋是一段未經(jīng)測試的程序，理論上來講，它可能會對整個程序中其他重要的功能代碼產(chǎn)生影響。

Mr Byrd has become something of a loose cannon in the Senate of late, but little could compare with his latest antics.
ECONOMIST: Trade
He is at most a slightly loose cannon in a party whose instinct is to lash every moving object tightly to the deck.
ECONOMIST: Is Tony Blair a Dalek?

someone who behaves in an uncontrolled or unexpected way and is likely to cause problems for other people