"grind down" in Chinese (Simplified)
磨损消磨（精力、意志）
Definition
通过摩擦逐渐磨损某物，或者随着时间的推移在精神或情感上让某人变得疲惫或虚弱。
Usage Notes (Chinese (Simplified))
既可用于实际（如牙齿、工具的磨损），也可比喻表示长期精神/情感消耗。常用于口语表达，形容压力或辛劳带来的疲惫。不要与“grind up”（完全粉碎）混淆。
Examples
The constant use will grind down the blade.
持续使用会**磨损**刀刃。
If you keep chewing hard things, you will grind down your teeth.
如果你总咬硬的东西，会把牙齿**磨损**。
Long work hours can grind down your energy.
长时间工作会**消磨**精力。
Little problems every day can really grind you down over time.
每天的小问题最终会把你**磨垮**。
All that negativity at work is starting to grind me down.
工作中的消极气氛开始让我**疲惫不堪**。
Over the years, bills and stress can grind you down if you’re not careful.
如果你不小心，多年的账单和压力会把你**拖垮**。