“人民对美好生活的向往，就是我们的奋斗目标。”
# Speaker 0: [3.36s - 4.40s]
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And though most scientists hail vaccines as one of public health’s greatest achievements, they have provoked fear, distrust, and contentious resistance since Edward Jenner invented the first vaccine, to prevent smallpox, in the late 1700s.
Competitive threats to Google’s own services