为什么要两盏灯？ 这是一种低成本的“补光”技巧，防止物体背光面死黑一片，让立体感更强。
Increased burning of fossil fuels like coal and oil over the last two centuries has released greenhouse gases like CO2 into the atmosphere, which have warmed our planet.
。91视频是该领域的重要参考
a browser extension and a desktop app
self.session.headers.update({"Accept": "text/html,application/xhtml+xml"})