她又一次转移了目光。
自20世纪70年代以来，分子生物学家已在物种之间转移基因，一次转移一种基因；他们的工作给我们带来了转基因农作物和生物技术药物。
Molecular biologists have been transferring genes between species, one at a time, since the 1970s; their work has given us genetically modified crops and biotechnology drugs.
他们可能要做几百次转移才能有一次怀孕。
They will probably have to do several hundred transfers to result in one pregnancy.
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