The 3 charging mistakes quietly damaging your tablet - and what to do instead
您的平板电脑的可靠性始于电池，并将其正确处理以使其保持强大。
Cameroon could be turning waste to energy: Study uncovers why it's not, and sets out solutions
许多非洲城市仍然在垃圾和垃圾中挣扎，这些垃圾和垃圾无法正确处理。这带来了严重的公共卫生风险。它吸引了蚊子和苍蝇等疾病的媒介，并可能导致霍乱和疟疾爆发。
