求 翻译! 急!It is a big job to take away a city's rubbish. Every

求 翻译! 急!
It is a big job to take away a city's rubbish. Every day trucks come into a city to collect it. Most rubbish is made up of things we can't eat or use. If we kept these things we would soon have a mountain of rubbish.
In some cities the rubbish is collected and taken outside of city to a dump. Often the city dump is placed where the ground is low or there is a big boue. The kitchen rubbish is broken into smal pieces and sent into the sewage system. The sewage system takes away the used water from toilets,bathtubs and other places.
To keep mice and flies away, the workers use some earth to cover the newly dumped rubbish. Later, frass may be planted on the rubbish-filled land. Finall, a house or a school may be built there , and then you'dnever know that this had once been an old rubbish dump.
In other cities the rubbish is burned in special places. The fire burns everything but the metal. Sometimes the metal can be usedagain in factories where things are made of metal. The food parts of rubbish are put in special piles where they slowly change into something called gumus , which looks like black earth. It is ich with the kinds of things that feed plants and help make them grow.
要通顺的
第二段的boue改成 houe
第三段的frass改成 grass
第四段的gumus改成 humus

一个城市的垃圾清理是一项大工程,每天都有卡车到城市里收集垃圾.多数垃圾是我们丢弃的生活垃圾,有吃的有用的.如果我们把这些垃圾留起来,可能很快就成一座垃圾山了.
在有些城市,收好的垃圾会拉到郊区进行倾倒.通常,城市垃圾场都是低洼地或者一个大的房子.厨房垃圾被分成很多小部分,送到污水系统.污水系统把厕所,浴室和其他地方用过的水处理走.
为让老鼠和苍蝇远离（垃圾）,工作人员会用一些土覆盖在新倒的垃圾上.随后,可能会在垃圾地上种一些草.最后,一座房子或者一所学校可能会建在那里,然后你将永远不会知道,这个地方曾经是一个垃圾场.
在其他城市,垃圾会在特定的地点燃烧焚化.火可以烧掉所有垃圾,除了金属.有时候,金属可以在金属制品工厂里被回收利用.垃圾中的食物部分,被倒在特殊的垃圾堆里,在那里这些食物垃圾慢慢地变成一种叫做“腐植土‘的东西,看起来像黑土.它和喂养植物并帮助它们生长之类的东西 在一起.
注：
最后一句的ich肯定打错了,没这个单词,所以只能猜