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1.A cloud of dust on the horizon announced the arrival of the cavalryman.
天边扬起的尘土说明骑兵来了。收藏指正
2.At sunrise and sunset, when the sun is below the horizon, the dust and water vapor molecules reflect the longer, red, wavelengths of light such that we can see them for more time (starting earlier in the case of sunrise and lasting longer in the case of sunset) than any of the other wavelengths.
日出和日落时分，当太阳还处于地平线以下时，灰尘及水蒸气分子就会反射波长较长的红色光波，使我们看到太阳光的时间更长一些(日出时开始的更早些，日落时持续的时间更长些)。收藏指正
3.There is not typical buried “A horizon" in the paleosols. It is not reasonable to classify paleosol profiles into A, B and C horizons. Owing to the continuous input of dust with plenty of carbonate, the pedogenic strength of the paleosols is steadily weakened, and thus has even not yet reached the level of the Brown Soil in most cases in Loess Plateau.
古土壤中并不存在埋藏A层 ,对古土壤进行A、B、C等发生学层次的划分值得商榷。 由于富含碳酸钙风尘物质的不断添入 ,成土作用强度受到不断削弱 ,绝大多数古土壤的成土作用强度未达到棕壤的发育强度。收藏指正
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