我是北方人，论季节，北方也许正是搅天风雪，水瘦山寒，云南的春天却脚步儿勤，来得快，到处早像催生婆似的正在催动花事。
In my hometown in the north, this was the month when rivers were frozen over and mountains snowbound . But spring comes early to Yunnan, urging the flowers to bloom.
应用系统论的观点建立了跋山库区土地生态系统模型，并对系统多因子进行了定量分析。
Land ecological model system is set up by using systematic idea, and multi-factors are analysed quantitatively.
现代家兔起源于野生穴兔，它与山兔属的野生兔是同科而不同属的动物，学术界对家兔的起源地有外来论和原产论两种不同的观点。
The Chinese rabbits, which originated from Oryctolagus, belong to the homologous Family but not belong to the same genus as the common hares of Lepus.
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