1. Expression：kingpin

Explanation：The most important or powerful person within an enterprise or organization. （企业或组织中最重要或最有权力的人）

Example：The drug kingpins are well protected.

毒枭受到了很好的保护。

He went from being a small-time hood to a mafia kingpin.

他从不成气候的小太保慢慢混到黑手党的头儿。

The notorious kingpin controls the illegal drug trade across the entire Eastern Seaboard.

臭名昭著的大头目控制着整个东海岸的非法毒品交易。

He started out selling cheap local newspapers when he was a teen. Now he's the kingpin of a huge global media empire.

他十几岁就开始卖廉价的当地报纸。现在，他是一个巨大的全球媒体帝国的核心人物。

情景对话：

A：Would you like to go to the movies with me tonihgt, Jane?

Jane，你今晚愿意和我一起去看电影吗？

B：I’d love to, but the kingpin of the recent crime hasn’t been caught yet, so I think I’d better stay at home.

我想去，但是那场罪犯活动的头目还没有被逮住，所以我想最好还是呆在家里。

2. Expressoion：go up king street

Explanation：To bankrupt. （破产）

Example：Overwhelmed by debt, he filed for going to king street.

他负债累累，只好声明破产。

When money is in short supply many businesses go to king street.

由于资金短缺，许多商行破产。

Chrysler should go up king street rather than approach the government for help.

克莱斯勒汽车公司应宣告破产，不应去向政府求缓。

His wife had much to do with his going up king street.

他的破产和他的妻子很有关系。