P 开头单词
pre-emption n. 优先购买权；收买权
pre-empt resources [经济学]优先占用资源
pre-empt vt. 先占； 先取得vi. [桥牌]先发制人地叫牌=preempt
pre-eminently ad.卓越地；杰出地
pre-eminent adj.卓越的；杰出的=preeminent.
pre-eminence n.杰出
pre-emergemergency n.备用; 辅助
pre-embryo n.(胎儿的)胚前期
pre-effector 前效应器, 前效应细胞
pre-editor 译前编辑
pre-eclampsia 先兆子痫
pre-dying 前处理废水
pre-distributor n.预分布器