Of course, solar activity is just one natural source of climate variability. Volcanic eruptions are another, spewing gas and dust into the atmosphere.
当然，太阳活动仅仅是气候变化的一个自然因素，火山喷发出气体和尘埃进入大气层也会带来这个结果。
At the same time, by enlarging the source of parents and adopting composite crosses, the defects of low genetic variability and genetic uniformity of low gossypol cotton can be overcomed.
同时，采用拓展亲本来源、复合杂交等手段，克服了低酚棉遗传变异率低，以及遗传单一的弊端。
At the same time, by enlarging the source of parents and adopting composite crosses, the defects of low genetic variability and genetic uniformity of low gossypol cotton can be overcomed.
同时，采用拓展亲本来源、复合杂交等手段，克服了低酚棉遗传变异率低，以及遗传单一的弊端。
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