由于电力供应不足，我们办公室今天下午经历了一次短暂的低电压。

Our office had a ___brown-out this afternoon due to insufficient power supply.

为防止用电高峰时段电网过载，该市已计划实施限电措施。

The city had scheduled ___brown-outs to prevent power grid overload during peak hours.

他在烈日下工作太久，突然感到一阵眩晕，差点摔倒。

After working too long under the hot sun, he had a sudden ___blackout and nearly fell over.