He was labelled (as) a traitor by his former colleagues.

他被以前的同事称为叛徒。

《牛津词典》

He was depicted as a traitor.

他被描绘成一个叛徒。

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What Is a Traitor?

什么叫叛徒？

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"To some people this building is the scene of a crime, where a murderer and a traitor was captured and brought to justice.

VOA: special.2009.11.06

They called him a traitor. Yet most people of the North accepted Webster's appeal for compromise.

VOA: special.2009.04.02

They called Cleveland a traitor to his party and to the American people.

VOA: special.2010.07.01

For some, Mr Gilmour is still remembered as a traitor who was guilty of betrayal.

BBC: IRA supergrass Raymond Gilmour 'abandoned' by MI5

After the 1993 Oslo Accords between Israel and the PLO, Iran abandoned Arafat as a traitor.

CENTERFORSECURITYPOLICY: Mugniyeh's true legacy

As leaders of Silicon Valley and Hollywood debark from their G6s in Sun Valley, a traitor has brought Bravo to nerdville.

FORBES: Hollywood, Silicon Valley At War in Sun Valley