waste[肥料/垃圾]/rubbish/garbage/trash/litter/debris

　　- eg: waste disposal[废品处理];

　　ecological[生态的]

　　- eg: ecological balance/equilibrium[生态平衡];

　　ecosystem生态系统;

　　worsen[恶化]/deteriorate

　　- eg: living standards have been worsened by inflation