state of siege

noun

1. 戒严（或封锁）状态
   a situation in which the government limits people's freedom to enter or leave a city, town or building

1. N-SING 戒严状态
   A state of siege is a situation in which a government or other authority puts restrictions on the movement of people into or out of a country, town, or building.
   1. Under the state of siege, the police could arrest suspects without charges or warrants.
      在戒严时，警方无需指控或逮捕令就可以逮捕嫌疑人。

1. Under the state of siege, the police could arrest suspects without charges or warrants.
   在戒严时，警方无需指控或逮捕令就可以逮捕嫌疑人。
2. The police placed the city centre under a virtual state of siege.
   警方事实上已封锁了市中心。
3. The country was in a state of siege, and tanks were lined up in front of the Presidential palace.
   那个国家正遭到围攻，而坦克都排列在总统府前面。
4. Mammalian cells exist in a state of oxidative siege in which survival requires an appropriate balance of oxidants and antioxidants. Reactive oxygen intermediates ( ROI) break this balance and play an important role in apoptosis.
   哺乳动物细胞的生存要求适当的氧化与抗氧化平衡，而活性氧中间产物则破坏这一平衡且在细胞凋亡中起重要作用。