https://blog.wongcw.com/2019/06/29/g20%e9%81%94%e6%88%90%e9%a1%98%e6%99%af%ef%bc%9a2050%e5%b9%b4%e5%b0%87%e6%b5%b7%e6%b4%8b%e5%a1%91%e6%96%99%e5%9e%83%e5%9c%be%e6%8e%92%e6%94%be%e6%b8%9b%e7%82%ba%e9%9b%b6/
G20達成願景:2050年將海洋塑料垃圾排放減為零