4.a clot of automobiles blocking the tunnel's entrance.
密集的车辆堵塞了隧道的入口
5.When you cut yourself, blood clots and forms a scab.
你割破了,会凝固、结痂。
6.A year ago he had a blood clot removed from his brain.
他脑内的一年前被取出了。
7.At highest field strengths, the core of the clot may have low signal on T2-weighted images, due to the presence of intracellular methemoglobin or of deoxyhemoglobin.