This is exactly what ToughTested has done with its range of power banks. Here, I'm looking at a pack from the ROC series, consisting of high-end power banks with built-in solar panels.
FT Digital Edition: our digitised print edition
。PDF资料对此有专业解读
"The platform is also unevenly moderated, and quality varies massively by community," say Oc.。PDF资料是该领域的重要参考
Essential digital access to quality FT journalism on any device. Pay a year upfront and save 20%.，这一点在体育直播中也有详细论述