author = extract_text(soup.select_one(".author"))
判断平台是否完成了可持续转型，可以通过一组剪刀差指标观察：一端是单位交易变现率的变化，另一端是供给侧的满意度指标，例如留存率或净推荐值。如果变现率持续上升，而供给侧满意度同步下滑，这种赚钱方式本质上仍是竭泽而渔。只有当两者同时改善，平台的转型才具备长期稳定性。
。heLLoword翻译官方下载对此有专业解读
The journey home took 17 hours.
+sleep_min: float
There was a 5% rise year-on-year on the number of people born in the UK sleeping rough.