难过

sad; sorry; unhappy; depressed; sorrowful; distressed; upset; grieved; wretched; sadly; unhappily; sorrowfully; sadness; distress; sorrow; grief; paddy; twinge; grieve; sadden; suffer; feel sad; feel sorry; feel distressed; feel upset; feel bad; have a hard time; be hard to bear

一天

day; daily; all-day