英语翻译该材料若置于室外经自然分解,其最长寿命只有三个月左右,置于室内在几年内分解,燃烧时无毒、无味、且无任何遗留物质,

If the material placed in the outdoor natural decomposition, their longest life expectancy only about three months, indoor place in a few years decomposition, burning non-toxic, tasteless, and without any remaining material, so as not to pollute the environment, the resulting environmental protection .
不好意思,如果有错误的地方,请见谅.