农业的特点是时空差异和变异性大，生产稳定性和可控程度差。
The characteristic of agriculture is space-time the difference and variability are great, it is bad to produce the stability and controllable degree.
发生了太多的事情，再次见到德里克，向凯尔透露自己是他的儿子，加上他还没完全适应穿越时空的“时间差”。
It was too much, seeing Derek again, revealing to Kyle that he was his father, plus the "time lag" hadn't completely worn off.
也许越差的学校会坐落在污染越严重的地方，又因为天气热时空气质量会下降，所以可能是学校或是温度的不同影响了成绩。
Worse schools could be located in more polluted neighbourhoods, and air quality falls in hot weather, so it could have been variation in schools or temperature that affected results.
数值模拟部分，根据实验条件编制有限差分法程序，以土槽实验模型为例验证了程序编制的正确性，同时模拟了溶质浓度的时空分布规律。
Numerical simulate: the finite difference program was compiled to simulate solute concentration distribution with time and distance. its property was proved by the soil trough experimental model.
数值模拟部分，根据实验条件编制有限差分法程序，以土槽实验模型为例验证了程序编制的正确性，同时模拟了溶质浓度的时空分布规律。
Numerical simulate: the finite difference program was compiled to simulate solute concentration distribution with time and distance. its property was proved by the soil trough experimental model.
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