由于电力短缺，这个地区经常停电。

This area often has ___blackouts due to power shortages.

医生说她频繁的晕厥可能是由低血压引起的。

The doctor said her frequent ___blackouts might be caused by low blood pressure.

政府实施新闻封锁，禁止报道抗议活动的细节。

The government imposed a media ___blackout to prevent reports about the protest details.