不只“看见”变化，张金海更想亲手“创造”变化。刚参加工作时，他体会到环卫工人的艰辛：扫把笨重、扬尘四起、效率低下，而扬尘不仅污染环境，还会影响人们的健康。凭借自学的电器维修技术，他买来元器件，反复设计图纸、拆拆装装、试验调试，最终发明了可伸缩环卫专用扫把，直接减少了道路清扫过程中的二次扬尘，为改善空气质量、守护市民的呼吸健康贡献了一份力量。
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From spending time talking to vets, I've learned that two opinions in particular are widely shared within the profession. Firstly, that the public have a warped view of healthcare costs because we have the NHS which means we don't have a clear idea how much our own treatment costs, never mind what is reasonable for pets.
这就造成了很矛盾的情况，视频火了，百分之八九十会被举报下架，不火还好点，能活得久一点，但又和我科普的意图是相悖的。