The Forbidden City takes its English name from the fact that in imperial times it was truly off-limits: no one could come and go except with official permission.

紫禁城的英文名字正来源于它真实的历史：在古代，这里是绝对禁止的。没有人在没有得到特殊许可的状况下可以进入到这里来。

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In times of danger flags could be hoisted and lanterns lit around the white dago ba to summon the imperial troops into battle.

在危急时刻可以升起旗帜，点燃灯笼以便召集御林军迅速进入作战状态。

youdao

In times of danger flags could be hoisted and lanterns lit around the white dagoba to summon the imperial troops into battle.

在危急时刻可以升起旗帜，点燃灯笼以便召集御林军迅速进入作战状态。

youdao

As in imperial times there are no rival and parallel institutions of power in the form of a nobility, an imperial bureaucratic class, a military class or a religious hierarchy.

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In traditional times, the brainy Zhu might have distinguished himself in the Imperial Civil Service exams and gone on rapidly to become a top minister of the Emperor.

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Prof Wendy Barclay, chair in influenza virology at Imperial College London, said other more complex viruses make proteins at different times during replication, but what is clever is that influenza can do this in such a simple way.

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