求翻译：堆肥法因没有前端的分类系统以及对有机物含量要求高、肥料销售困难，臭气控制难，残渣量大等因素而使其应用逐渐减少。是什么意思？

Composting because there is no front-end of the classification system and the high organic content requirements, fertilizer sales difficult, difficult to control odor, residue volume and other factors gradually reduce its application.

composting method because there are no front-end system of classification of organic matter content and high requirements, and fertilizer sales difficulties, grunting, it makes it difficult to control such factors as the residue to gradually reduce its application.

Because front end the compost law does not have the taxonomy as well as requests, the fertilizer sale difficulty to the organic content, the ozone to control high difficultly, the residual quantity big and so on the factors cause its application to reduce gradually.

Compost fin classification systems do not have a front-end, and require high organic matter content, fertilizer sales difficulties, odor control, factors such as the large amount of residue and its application gradually reduced.

Compost fin classification systems do not have a front-end, and require high organic matter content, fertilizer sales difficulties, odor control, factors such as the large amount of residue and its application gradually reduced.