That some of his work was illegal.

他的有些工作是非法的。

youdao

The researchers didn't attempt to explore the administrative interfaces or tamper with the devices they found, so they believe their work isn't illegal.

研究人员并没有尝试浏览扫描出的肉鸡设备的管理界面或是窜改其数据，所以他们认为自己的工作并不违法。

youdao

In their free time they do thefts, work as illegal parking attendants, sell things, work as porters.

闲暇时间，他们还会选择偷窃、做非法停车服务员、贩售商品或做搬运工来取得收入。

youdao

Also,because it is illegal to paint public and private property without permission, street artists usually work secretly.

VOA: special.2009.04.08

Once they get past immigration at the destination, they invariably contact relatives or local snakeheads for guidance, lodging and illegal work.

CNN: From Our Correspondent: Dreaming of Gold Mountain

The decision is followed by a surge in canceled and delayed flights, which American blames on an illegal work slowdown by pilots.

WSJ: A timeline of events in American Airlines' history

The latest scandal, about illegal building work at a house owned by Mr Tang's wife, may even force him to abandon his campaign.

ECONOMIST: Banyan