拉普拉斯算子的方法是在图像的二阶导数搜索零交叉来查找边缘。
The Laplacian method searches for zero crossings in the second derivative of the image to find edges.
该零售模式是为对越来越多网络相关工具有上升性使用需求的人设计的，目的是改变他们的搜索、购物和购买方式。
It is about devising retail models that work for people who are making increasing use of a growing array of internet-connected tools to change how they search, shop, and buy.
如果你搜索出零个结果，请不要担心：对你和你的品牌来说可能还有一个机会来建立品牌形象并开始一个服务会话。
If your search yields zero results, don't worry: there may still be an opportunity for you and your brand to establish a presence and start a conversation on the service.
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