将以下文字内容翻译成英文：当政府继续进行购置补贴时C&T机制比碳税政策更能促进物流企业采纳电动物流车进而促进碳减排因此考虑到物流行业的发展和减排成效政府可以对物流企业实施C&T机制；当购置补贴取消时碳税政策比C&T机制更能促进物流企业减排因此针对环境污染严重、碳排放量高的地区可以采取碳税政策。

When the government continues to provide purchase subsidies, the C&T mechanism is more effective in promoting logistics companies to adopt electric logistics vehicles and reduce carbon emissions than carbon tax policies. Therefore, considering the development of the logistics industry and the effectiveness of emissions reduction, the government can implement the C&T mechanism on logistics companies. When purchase subsidies are cancelled, carbon tax policies are more effective than the C&T mechanism in promoting emissions reduction by logistics companies. Therefore, carbon tax policies can be implemented in areas with severe environmental pollution and high carbon emissions.