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，更多细节参见Line官方版本下载
百度 App 月活达 6.79 亿；文心助手月活达 2.02 亿，春节红包活动带动月活同比增长 4 倍；
A microfluidics chip enables researchers to manipulate and study individual cells, without the use of agar at all. Credit: Brouzes E. et al. PNAS (2009).