下井投石〖解释〗见人掉进井里,不但不搭救,反而向井里仍石头. 投河觅井〖解释〗即寻死觅活.闹着要死要活.多指用自杀来吓唬人. 河水不犯井水〖解释〗比喻互不干犯. 甘井先竭〖解释〗甜水井的水先枯竭.比喻有...