washing sand out

例句：

1. 1.The engineer washed the sand out of the machine to fix it.
   工程师把沙子从机器里洗出来修理它。
2. 2.The farmers washed the sand out of their fields to prepare for planting.
   农民们把沙子从田地里洗出来准备种植。
3. 3. The builders washed the sand out of the foundation to make it stronger.
   建筑工人把沙子从地基中洗出来使地基更坚固。