1. The posterior pituitary (neurohypophysis) is the smaller portion at the bottom. 在垂体底部较小的部分是垂体后叶（神经垂体）。
2. Conclusion Implantation of posterior chamber lens in the absence of capsular support is a safe and effective operation. 结论无晶体后囊支撑的后房型人工晶体植入术是一种安全有效的术式。
3. Patients were analyzed with respect to technique of anterior ring fixation and posterior ring injury pattern and fixation. 分析病人情况，非凡关注骨盆前环的固定技术、后环的损伤类型及固定方法。
英英解释
n.
1. the fleshy part of the human body that you sit on
2. a tooth situated at the back of the mouth adj.
1. at or near the hind end in quadrupeds or toward the spine in primates
