1.Other studies find no evidence for or against The PHH, a major obstacle in this literature is that data on regulation is often lacking.
其他的研究也没有找到支持或是反对缓建避难所假说的证据。撰写本文的主要阻碍就是缺乏环境规制数据的支持。
2.What was a major obstacle you were able to overcome in the past year?
你在过去的一年里克服了什么重要的障碍？
3.The trust gap is a major obstacle for China and its companies as they seek to enter more sensitive parts of the global economy.
这种信任鸿沟是中国和中国公司进入世界经济更加敏感部分的主要障碍。
4.The size and heft of current fuel cells has been a major obstacle to making them practical for use in automobiles.
目前的燃料电池的体积和重量是将它们实际运用于汽车的主要障碍。
5.As to China, administrative monopolization has been a major obstacle to the industrial development and business reform.
行政垄断是长期制约和困扰我国企业改革和产业发展的顽症。
6.However, the tissue culture in most of indica rice varieties is still difficult, and genotype is a major obstacle.
但是作为主要栽培品种，籼稻的组织培养和转基因仍然存在一定困难。
7.Real investment opportunities exist, but current road conditions are a major obstacle to enhancing trade between our two countries.
实际投资机会是存在的，但目前的道路状况是增加我们两国间贸易的主要障碍。
8.But the existence of a semantic gap is the major obstacle of image retrieval technology.
但是“语义鸿沟”的存在成为图像检索领域发展的重要“瓶颈”。
9.This information can shed light on the genes responsible for malaria drug resistance -- a major obstacle to adequate control of the disease.
这些信息可以帮助发现与疟疾抗药性有关基因，抗药性基因的存在是控制疟疾的主要障碍物。
10.That's a major obstacle, but does the whole of the wire have to be that cold?
这个温度是一个主要的障碍，但是确实整个线路都必须那样冷吗？。