与DSA对比，MRA能够准确地显示闭塞或狭窄的大血管和代偿的不成形的弯延扭曲的侧支血管网。
In comparison with DSA, MRA could accurately show the stenosis or occlusion of cerebral arteries and tortuous collateral circulation.
后来经过探索，我看到有简陋得不成形的房子三三两两地分布在运河的两边和周围的河岸上。
Exploring, I found humble houses strewn about on both side of the canal and at the river's banks with no observable pattern.
后来经过探索，我看到有简陋得不成形的房子三三两两地分布在运河的两边和周围的河岸上。
Exploring, I found humble houses strewn about on both side of the canal and at the river's banks with no observable pattern.
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