preclude

动词 preclude:

1. keep from happening or arising; make impossible
   同义词：prevent, forestall, foreclose, forbid
2. make impossible, especially beforehand
   同义词：rule out, close out

1. My present finances preclude the possibility of buying a car.
   按我目前的财务状况我是不可能买车的。
2. That will preclude him from escaping.
   那将阻止他逃走，那将使他无法逃走。

pre.clude

v.tr.（及物动词）
pre.clud.ed,pre.clud.ing,pre.cludes
To make impossible, as by action taken in advance; prevent.See Synonyms at prevent
预防：预先采取行动以取消可能性；阻止参见 prevent
To exclude or prevent (someone) from a given condition or activity:
排除：把（某人）从特定的状态或活动中排除或除外：
例句：
Modesty precludes me from accepting the honor.
谦逊阻止我接受这一荣誉

来源：
Latin praeclôdere
拉丁语 praeclôdere
prae- [pre-]
prae- [前缀，表.先于.]
claudere [to close]
claudere [关闭]

【引伸】
preclu.sion
preclu.sive
preclu.sively
adv.（副词）