eat into

英 [iːt ˈɪntə]

美 [iːt ˈɪntə]

消耗，耗费（时间或资源）; （酸、锈等）侵蚀，腐蚀

柯林斯词典

PHRASAL VERB 消耗，耗费（时间或资源）
If somethingeats intoyour time or your resources, it uses them, when they should be used for other things.
1. Responsibilities at home and work eat into his time...
  家庭和工作的双重负担耗费了他的时间。
2. Wages were rising faster than productivity and this was eating into profits.
  工资的涨幅高过了生产率增长的速度，从而消耗了利润所得。
PHRASAL VERB (酸、锈等)侵蚀，腐蚀
If a substance such as acid or rusteats intosomething, it destroys or damages its surface.
1. Ulcers occur when the stomach's natural acids eat into the lining of the stomach.
  胃酸侵蚀胃内壁引发溃疡。

verb

gnaw into
1. The injustice rankled her
2. his resentment festered
Synonym:fretranklegrate