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后方齿孔都是看得见，对切缘。
The rear perforations are visible on the cut edge.
youdao
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该手术切缘是免费的肿瘤的参与。
The surgical margin is free of tumor involvement.
youdao
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所有病例手术切缘均为阴性。
Surgical margins were negative in all cases.
youdao
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安全切缘；
Safe surgical margin;
youdao
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安全切缘；
Safe surgical margin;
youdao