资料来源 : pyDict

先买,先取阻击叫牌

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Preempt \Pre*["e]mpt"\ (?; 215), v. t. & i. [imp. & p. p.
   {Pre["e]mpted}; p. pr. & vb. n. {Pre["e]mpting}.] [See
   {Pre["e]mption}.]
   To settle upon (public land) with a right of preemption, as
   under the laws of the United States; to take by
   pre["e]mption.

资料来源 : WordNet®

preempt
     v 1: acquire by preemption
     2: make a preemptive bid