pre-emption
n.
also preemption, c.1600, literally "the right of purchasing before others," from pre- "before" + emption.
| 词汇 | pre-emption | 
| 词根词缀 | Online Etymology Dictionary pre-emption n. also preemption, c.1600, literally "the right of purchasing before others," from pre- "before" + emption. | 
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