“界标”造句

区是两个邻近界标之间的区域.
A region is an area lying between two adjacent landmarks.

何以说它们是界标?
In what sense are they landmarks?

结论: 从上切牙到食道镜检查的界标和所报道的测量方法在以往的研究中已经被测量和标准化.
Conclusions: Historically, landmark and report measurements in esophagoscopy hae been measured and standardized the upper incisor.

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