pre-emptive

adj of or concerning pre-emption 优先购买的; 预先采取行动的: a pre-emptive right to buy 优先购买权 * pre-emptive purchase 优先购买 * a pre-emptive attack/strike, ie one designed to forestall a likely enemy attack 先发制人的攻击[打击] * a pre-emptive bid, ie (in bridge) one made to prevent further bidding 先发制人的叫牌（用以阻止对方叫牌）.

prawn, pray, prayer, prayer-book, prayer-mat (also `prayer-rug), prayer-meeting, prayer-wheel, praying mantis, pre-, pre-arrange, pre-arranged, pre-arrangement, pre-cast, pre-condition, pre-conditioning, pre-eminence, pre-eminent, pre-eminently, pre-empt, pre-emption, pre-exist, pre-existence, pre-existent, pre-heat, pre-natal, pre-ordain, pre-package, Pre-Raphaelite, pre-record, pre-recorded, pre-school, pre-set, pre-shrunk, pre-stressed, pre-tax, pre-war, preach, preacher, preachy, preamble,