make inroads into/upon
1. 侵害; 侵蚀
The long illness made serious inroads upon his savings.
他长期患病使他耗去许多积蓄。
习惯用语make inroads into1.■侵袭, 侵入2.■用掉...的大部分, 严重削减; 严重消耗make inroads on1.■侵袭, 侵入2.■用掉...的大部分, 严重削减; 严重消耗make inroads upon1.■侵袭, 侵入2.■用掉...的大部分, 严重削减; 严重消耗