They are not actively aggressive however they are sneakier.

但是他们并不积极进取他们狡猾。

Because you never know when someone will be smarter and sneakier than you, that's why.

因为您永远不知道何时会出现比您更聪明的人，这就是原因。

So here's a sneakier idea: Encourage her to start a blog and post all that fascinating stuff she finds online.

有个小点子：鼓励她开博客然后把网上好玩的东西都放上去。

The tabloids may be sneakier and more persistent than more respected news sources, but this is a matter of degree, not kind.

小报可能比主流报刊更鬼鬼祟祟和坚持不懈，但这是一个程度的问题，不是异类问题。

Then there are the sneakier ones, like pulmonary disease, bladder cancer, rheumatoid arthritis, silicosis, renal disease, emphysema, "black lung" and lung cancer.

还有更糟糕的事情，如肺病、膀胱癌、类风湿性关节炎、硅肺病、肾病、肺气肿、“黑肺病”以及肺癌。