Not just 'any' sign! Searching for negative polarity items in German Sign Lan...

This is a preprint of the article "Not just any sign! Searching for negative polarity items in German Sign Language (DGS)", to be published...本文为论文《不止于任意手势！在德国手语（DGS）中搜寻负极性项（negative polarity items）》的预印本，即将正式刊发……