impoverish
v[Tn]
1 make (sb) poor 使(某人)贫困
an elderly impoverished writer 穷困的老作家.
2 make (sth) poorer or worse in quality 使(某物)贫瘠或恶化
Heavy rain and excessive use have impoverished the soil. 这土地因遭暴雨侵蚀及使用过度已贫瘠不堪.
Our lives would have been greatly impoverished if we had not known our dear friend. 若不是得识我们这位好朋友, 我们的生活一定十分不妙.