White noise simply uses a random number generator to produce threshold values.
The only cons are that some photos contain people, and Pexels doesn't allow you to remove people from photos. Search your keyword and download as many as you want!
与此同时，研发投入在千万元及以上区间的企业数量，已经连续五年保持两位数的增长，反映出更多企业正在系统化、规模化地投入研发活动。，详情可参考safew官方版本下载
As McKenzie speaks about his job, it is a stunning Antarctic summer's day, a balmy -15C. The view outside his window is a vast expanse of white as far as the eye can see, smoothed over by an equally vast layer of pure blue.，更多细节参见旺商聊官方下载
"How far back in time can you understand English?", a post that tells a story starting with the English of 2000 AD and ending with the English of 1000 AD has gone viral, and gotten a lot of people interested in older forms of English.
漫步村中，会发现这里的墨香里混入了“新潮”的味道。，详情可参考爱思助手下载最新版本