three minutes/ten seconds etc flatinformalSHORT TIME in exactly three minutes, ten seconds etc – used to emphasize that something happens or is done very quickly 正好三分钟/十秒钟等〔用于强调事情发生或完成的速度很快〕 I was dressed in five minutes flat. 我只用五分钟就穿好衣服了。
→ three minutes/ten seconds etc flat at flat3(1)