Then, at the end of 3minutes, a red board will be raised to let the speaker know that the time has run out.

当3分钟时间一到，我们的工作人员会举一块红色的牌子示意时间已到。

youdao

Then, at the end of 3minutes, a red board will be raised to let the speaker know that the time has run out.

当3分钟时间一到，我们的工作人员会举一块红色的牌子示意时间已到。

youdao