Unwanted ADs, get out of my place!

Have used Google Adsense for a few weeks. It was looking good in the beginning. Like what I said, sometimes you can find useful information in the ads. But recently, after adding Chinese version in the posts, more and more unwanted ads come out, including the no sense hospitals and so on, which are not related to my topics at all. Maybe Google is still not so good in Chinese. Though Google provided an AdSense Preview Tool, there are god knows how many unwanted ads waiting to be published. Picking them out one by one is a waste of time. I have no choice but updating the Chinese version in another place.