235. probe v. 探究>~ a matter to the bottom
236. proficiency n. 熟练
237. profound a. 深刻的; 深奥的
238. prolong v. 延长
239. prospective a. 预期的,未来的 >his ~ father-in-law
240. provocative a. 挑衅的>His ~ language provoked Peter.
241. random a. 随意的 at ~
242. reap v. 收获 =harvest>reap crops
243. reassure v. 使放心
244. reconcile v. 使和解