The ethical snag is that the best stem cells are harvested from human embryos , killing them .
阻碍干细胞研究的伦理问题在于,最好的干细胞都是在将人类胚胎杀死之后从中采集的。
The biggest snag holding back e-commerce for years was a lack of trust .
多年来抑制电子商务行业的最大障碍是信任的缺失。
The only snag currently is that this device has not been created .
目前唯一的障碍是这个装置还没有被制造完成。
But this conclusion has a big snag - it 's only really based on experiments done with western populations .
但是这个结论有个很大的问题---这个结论只是通过对西方人实验做出的判断。
The snag is that economists disagree on whether and how much this will really save the government or the health system .
问题是经济学家对于该方案是否能真正节省政府或医保体系的开支以及能节省多少,无法达成一致。
But there is a big snag .
但有一个大钉子。
And as the u. s. continues its migration from a manufacturing economy to a knowledge-based one , women are poised to snag more jobs .
而由于美国继续从制造业经济过渡到以知识为基础的一,妇女正准备阻拦更多的就业机会。
Once a city has established quantifiable goals and selected the indicators to measure its progress , it needs to snag some early wins while also building plans for longer-term actions .