expostulate
v[I, Ipr]
~ (with sb) (on/about sth) (fml 文) make a protest (to sb); reason or argue (with sb), esp to persuade him not to do sth (向某人)提抗议; (与某人)讲道理或争论; (尤指)规劝, 劝戒
They expostulated with him about the risks involved in his plan. 他们指出他的计划有风险, 劝他放弃.