In addition , micro-robots could deliver drugs directly to veins inside the retina that have become obstructed by clots , a condition that can cause blindness and for which there is at present no reliable cure .
Dr. emani and his colleagues devised a complex strategy to open obstructed valves and repair other malformations to direct blood flow to the left ventricle instead of away from it .
But the reality of politics has obstructed that grand dream .
但是现实的政治阻碍了这个宏伟的梦想。
Even more dangerous for mr murdoch are allegations levelled by police and politicians that executives obstructed efforts to uncover criminality .
对默多克来说更加危险的是,警方和政客指责该集团高管对调查犯罪事实的努力进行阻碍。
Extradition is very often obstructed by the fact that a person condemned to death in absentia cannot be extradited for human-rights reasons .
引渡罪犯经常被如下现实原因所阻碍,即当某人在缺席的情况下被宣判死刑,会因为人权的理由而无法引渡。
Setting aside a partisan fight that has obstructed the passage of many other bills , parliament last month passed legislation giving coast guard officials the authority to arrest foreigners accused of illegally landing on japanese territory .