They then patrol 24 hours a day during the weekend to ensure that each flag remains standing.

然后，他们每天24小时巡逻在周末，以确保每个标志保持站立。

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They then patrol 24 hours a day during the weekend to ensure that each flag remains standing.

然后，他们每天24小时巡逻在周末，以确保每个标志保持站立。

youdao