Oneilln.奥尼尔onen.一；一个；一体adj.一个的；某一个的；唯一的；同一的pron.任何人；某人one's liability to diseaseOne Paper Two Publications一稿两用one hundred and eighty one(=181) 一百八十一one-platform interchange同站台换乘One of five equal parts.五分之一one-sided communications单边通信one of life's unfortunatesOne Project One Discussion一事一议one hundred and forty four(=144) 一百四十四one hundred and thirty one(=131) 一百三十一

1. There the cells divide rapidly to form a single layer of skin.
   细胞在其中迅速分裂，并形成一个单层的皮肤。