大家好，歡迎來的餅哥英語的頻道，今天我們分享一個非常有用且地道的表達——black out, 這個短語的含義不是指「外面很黑」，其正確的含義是：
black out 暫時失去知覺，昏厥
My blood sugar dropped so low during the meeting that I blacked out and woke up on the floor.
開會的時候我的血糖降得很低，以至於我失去知覺，醒來的時候，我已經躺在地上了。
After I fell, I must have blacked out.
摔倒後，我一定是暫時失去了知覺。
I think I am going to black out.
我想我要昏厥了。
I could feel blood draining from my face. I wondered whether I was about to black out.
我能感到血從臉上淌下來。我不知道自己是不是要失去知覺了。
black out 斷電
The lightning strike blacked the entire town out.
雷擊使整個城市斷電。
The manager blacked out the whole building during the emergency to prevent an explosion.
經理在搶險期間將整棟樓都斷電了，以防爆炸。