Many of the promised benefits to farmers of GM crops, including GM RR soy, have not materialized. On the other hand, unexpected problems have arisen.
包括抗草甘膦除草剂大豆在内的关于转基因作物对农民有益的许多允诺,并没有实现。另外以方面,出现了许多未预料的问题。
In practice, as you have seen, the result tree is not materialized in memory, so the serializer is handed the nodes of the tree one at a time in document order.
实际上,如您所见,结果树没有在内存中具体化,所以串行化器将按文档顺序一次交出树的一个节点。
It does not, however, require consideration of the psychological effects that the mere existence of a risk may have before that risk has materialized.
但是,它并不要求考虑在风险没有形成之前,仅仅由于风险的存在而产生的心理影响。
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