About the 15th of May the keel of the new vessel lay along the dockyard, and soon the stem and stern-post, mortised at each of its extremities, rose almost perpendicularly.
5月15日前后，新船的龙骨已经搁在造船所了；不久，船首材和船尾材也已用榫头分别接在龙骨的两头，几乎直立起来。
We carefully made comparative analysis on the significance of isomorph prefix, post positioned stem and function.
从前缀的意义、后置词根、功能等方面进行了细致的对比分析。
Methods: limbal stem cell transplantation was performed in 39 cases(48 eyes) with recurrent pterygium. The post-operative follow-up period was 6 to 24 months.
方法：采用角膜缘干细胞移植术治疗39例（48眼）复发性翼状胬肉，术后随访6个月至2年。
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