It was necessary to detect the cavernous sinus tumors with X - film, CT, MRI and angiogra - phy.

对海绵窦肿瘤做 X 线平片 、 CT, MRI及血管造影检查是必要的.

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It is much more complex and difficult to study Archean stratigraphy than Phanerozoic stratigra - phy.

太古宙地层与显生宙地层相比,具有很大的复杂性,研究难度大.

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Gym mostly trains strong phy - sique of people , and aesthetics train tasteful ability of people.

体育主要是培养人的健壮体魄, 美育则培养人的审美能力.

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