采沙坑

例句：

1. 1. The children were playing in the sandpit when it rained.
   孩子们在沙坑里玩耍时下起了雨。
2. 2. The engineer designed a sandbox for the construction site.
   工程师为工地设计了一个沙盒。
3. 3. The workers used the sandbox to clean up the dirt from the construction site.
   工人们使用沙盒清理建筑工地上的泥土。