sand bin

例句：

1. 1. The engineer used a sand box to test the new machine.
   工程师使用一个沙箱来测试新机器。
2. 2.The children played in the sand box happily.
   孩子们在沙箱里快乐地玩耍。
3. 3.The scientist conducted experiments in the sand box.
   科学家在沙箱中进行实验。