shut的过去式
过去式是shut，例如：
1.The computer system will be shut down over the weekend.计算机系统周末关闭。
2.The mill was finally shut down by state safety inspectors.工厂终于遭国家安全检查员关闭了。
过去式是shut，例如：
1.The computer system will be shut down over the weekend.计算机系统周末关闭。
2.The mill was finally shut down by state safety inspectors.工厂终于遭国家安全检查员关闭了。