a brilliantly sunny day的用法和样例：
- The foreigner may laugh when he sees the Englishman setting forth on a brilliantly sunny morning wearing a raincoat and carrying an umbrella, but he may well regret his laughter later in the day!
- It's a lovely sunny day; why don't we run down to the coast?
- A brilliant sun lit up their rooms.
- It's good to take a walk on this sunny day.