D 'you think it's an illegal deal?

你认为这是个非法的交易吗？

youdao

His illegal deal is steadily milking the profit from the business.

他在搞非法交易不断榨取公司的利润。

youdao

The deal may be ruled illegal.

这笔交易可能会被判定为非法。

《牛津词典》

But that has changed as border security increased to deal with illegal immigration and drug gangs.

NPR: Nortec Collective Crosses Musical, Real Borders

Some seem to have gone to the southern border with Brazil, to deal with illegal mining.

ECONOMIST: A hundred years of bombast

And in Arizona an open congressional seat as resulted in a split among GOP voters over how to deal with illegal immigrants.

NPR: For Santorum, Race Momentum Swings