preemption什么意思、怎么读？单词用法、记忆法、发音音标、反义词辨析、词语翻译、例句造句

preemption 音标：[prɪ'empʃən]

n.先买权，先占，先发制人；优先权；

◆记忆方法一：
词根词缀记忆法：preemption n 优先权；霸占（pre+empt+ion→先拿→霸占）,em,empt,ampl=take,procure,表示“拿，获得”

VERB. 抢先行动；预先制止；先发制人. If you pre-empt an action, you prevent it from happening by doing something which makes it unnecessary or impossible.