看起来，苹果似乎真的没必要给 MacBook 装上一个触控屏——只是，时代变了。
High-speed imaging reveals that the squeak of soft–rigid frictional interfaces, like sneakers sliding on a basketball court, arises from intersonic opening slip pulses—analogous to earthquake ruptures—that thin ridges on the rubber confine to repeat at a musical frequency.
。关于这个话题，搜狗输入法下载提供了深入分析
在故乡县城，你还是能找到许多过去的影子。那是“中式梦核”遗留在时代缝隙里的影子：破旧的房子很多年没有修，没办法在大城市出现的电动三轮成为县城独特的出行工具，小摊的烟火气在无序中自有章法……
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