wash-out

例句：

1. 1.The paint was washed out by the rain.
   雨水把油漆冲刷掉了。
2. 2. The stain on the shirt was washed out with soap and water.
   用肥皂水把衬衫上的污渍冲洗干净了。
3. 3. The river washed out a large boulder.
   河水冲走了一块大石头。