He told her their affair would have to stop, because Jack Smith was blackmailing him.

他告诉她他们俩的风流韵事不得不到此为止，因为杰克·史密斯正在借此敲诈他。

《柯林斯英汉双解大词典》

The car was registered to Jack Smith.

汽车登记注明车主为杰克·史密斯。

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They turned to Jack Smith, who in turn signed on Mr Wagoner, then barely 40, as one of his top lieutenants.

他们聘用了杰克·史密斯，杰克·史密斯又雇用了克•瓦格纳。那时，克•瓦格纳年仅40，是杰克·史密斯高层副手之一。

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Jack Smith's way is to work the machine, not just throw a spanner in it.

ECONOMIST: The quiet man

They turned to Jack Smith, who in turn signed on Mr Wagoner, then barely 40, as one of his top lieutenants.

ECONOMIST: The world's biggest carmaker is at sea and floundering

For years I have been an unrelenting critic of General Motors and the management team of Jack Smith (now chairman of the board) and Rick Wagoner Jr.

FORBES: Magazine Article