Linux kernel newbies em português

We develop the use of sand stone there are mainly two kinds of, a kind of is of natural stone and artificial sand, the main mode of production of natural sand is mined, so Chen is low yield is very high, and the production mode of artificial sand and stone is the use of sand making machine production such costs will lower than natural sand, but natural sand mining environmental damage is so great that even if we developed, Hui Bei Jing destruction at sixes and sevens, it is not worth the candle, and the artificial sand although the high cost of the point, but will not pollute the environment, it should be the vigorous development of artificial sand.
Years we use the sand stone is mainly the production of artificial mechanism sand, now the science and technology developed the reuse equipment production mechanism sand when yield and quality are improved by, such production enough to meet the current market demands, coupled with the recent years of natural sand stone has been mining, now because of the natural sand and gravel mining and destroyed the environment, has begun to gradually recovered. But the temptation of huge profits, some unscrupulous traders in natural sand illegal mining, this phenomenon is especially in the lower reaches of the Hukou Waterfall is the most obvious, according to the report said, now the Hukou Waterfall downstream of the ecological environment has been destroyed. See evidence of people's distress everywhere less than ten kilometers, the road there are more than 20 illegal sand mining, sand wear is more than 20, according to the local people said, each ship can mining 1000 cubic meters a day of sand, the number of so many ships a day mining sand is amazing, the river on both sides of the great damage to the environment, because the mining river has appeared the phenomenon of desertification is serious, and in the 309 National Road 1298 kilometers there are half of the road dozens of meters of landslides, the illegal exploitation not only caused irreparable damage to the environment, to our security is a big threat.
Which was enough to see the exploitation of natural sand harm, for we can not develop to the cost of damage to the environment, so in our development should also be to protect the environment as the main, in the sand and gravel industry we should vigorously develop the mechanism of sand production, put an end to the exploitation of natural sand.