It's no use crying over spilt milk. What's done cannot be undone.
覆水难收。
The coach is always gloomy when the team loses a game.
球队一输球,教练总要绷起脸来。
The parquet floors shone like mirrors; highly polished silver was displayed in gleaming glass cabinets; even my uncle's huge collection of books was kept miraculously free from dust.