第三，数据中心选址逻辑彻底改写。
Compact cameras tend to have smaller sensors and slightly lower quality lenses, but they’re obviously easier to carry — most will fit in a large pocket. So, if budget, convenience and portability is the most important to you, then go for a model in this category.
，更多细节参见一键获取谷歌浏览器下载
Discard old data: evict what's already buffered to make room
be integrated with a wide range of web applications