结果表明：降水量的年度变化及其季节分配直接导致了克氏针茅草原群落初级生产力的年度波动；
The results show that annual changes and seasonal distribution of precipitation led to the fluctuation of the primary productivity of the community;
(韦氏词典2009)记者常常被分配在几个不同领域，每一个领域都有不同的要求。
(Merriam-Webster 2009) Journalists often are spread in to several fields and each of it has different requirements.
(韦氏词典2009)记者常常被分配在几个不同领域，每一个领域都有不同的要求。
(Merriam-Webster 2009) Journalists often are spread in to several fields and each of it has different requirements.
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