But we put the matter... on the backburner... for nearly two centuries.
但我们把这件事… … 搁置了… … 将近两个纪。
Cloning for conservation, meanwhile, has been on the backburner for a few reasons: Breeding practices are less developed for species in need of conservation, and there's less commercial interest in maintaining endangered animals.
与此时,出于以下几个原因,为保护而进行的克隆一直处于次要地位:需要保护的物种的育种实践还不够发达,而且保护濒危动物的商业利益也较少。