impoverish
/ɪmˈpɒvərɪʃ/verb
with obj.
1- make (a person or area) poor使（人或地区）贫穷：
as adj. impoverished impoverished peasant farmers.陷入贫困的农民们。
1.1
- exhaust the strength, vitality, or natural fertility of使（力量、活力或肥力）枯竭：
the soil was impoverished by annual burning
土壤因每年燃烧而缺乏肥力
as adj. impoverished figurative 〈喻〉an impoverished and debased language.毫无活力、失去价值的语言。
派生词
impoverishment
noun词源
late Middle English （formerly also as empoverish）： from Old French empoveriss-, lengthened stem of empoverir， based on povre 'poor'.