all of a sudden
突然, 冷不防
例句与用法:
She lay awake all night long.
她整整一夜没合上眼。
In New York, some stores stay open all night long.
在纽约,有些商店通宵营业。
After their victory they were whooping it up all night long.
他们获胜後通宵狂欢庆祝。
He was moaning (away) all night long.
他整夜不断呻吟。
突然地; 出乎意料地
All of a sudden the lights went out.
突然灯灭了。