口部缺陷。光滑的口部出现微小的釉层脱落，主要是使用中受到长年的磨损造成的。
结论心脏介入性治疗术前备皮不剃毛不会增加穿刺口感染的机会，也不是影响穿刺口愈合的因素。
Conclusions it did not increase puncture point infection rate without preoperative shaving in cardiac interventional therapy, and did not affect the cure of puncture point.
纤毛虫最重要的3个类群为下毛目、肾形目和前口目，其中又以下毛目种类最丰富。
The 3 most important groups of soil ciliates were Hypotrichida, Colpodida and Prostomatida, among which Hypotrichida had the greatest richness of species.
从万能更联的正面看，将两侧的毛顺着脸颊向口鼻的方向用剪刀修剪。
Trim the hair with scissors so that none of the side hair extends past the cheek when you look at it from the front.
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