十个字母p开头的单词

　　Selection and evaluation of treatment methods for benign pancreatic head mass

　　胰头部良性肿块治疗方式选择与评价

　　Study on Differentiation of Liver Stem Cells into Pancreatic β Cells

　　肝脏干细胞向胰腺β细胞分化的研究

　　The children were tearing about in the playground.

　　孩子们在游戏场上飞跑。

　　The students swarmed towards the playground.

　　学生们一窝蜂似地奔向操场。

　　He limped off the playground.

　　他一瘸一拐地离开了运动场。

　　My tooth came out quite painlessly.

　　我的牙一点不疼地掉了下来。