Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac.
术前造影以了解泪囊部位，以选择最佳手术适应证。
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No one can say which company will preform well and which will not.
没人可以百分之百预测一业的未来业绩。
Programming consists in an animal's innate endowment with determinate preformed responses to stimuli.
1. 编程于动物的先天禀赋，对刺有确定的预先形成的反应。
At my worst I was still spending time with friends, keeping up straight A's at school, and preforming well at my job.
糟糕的时候，仍然和朋友们一起，学校保持优等成绩，工作中表现出色。
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划词翻译
详细解释
部位，以选择最佳手术适应证。
业的未来
于动物的先天禀赋，对刺
有确定的
糟糕的时候，
