On a sunny sunny day.

在一个阳光灿烂的一天。

youdao

Whether sunny day, rainy or cloudy days, like your life is always a sunny day!

不管晴天，雨天还是阴天、愿你的生活中永远都是一片艳阳天！

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Today is a sunny day, I like sunny days.

今天是晴天，我喜欢晴天。

youdao

I told him to stay down in Florida. Honey, you are gonna love Jacksonville.It's sunny every day, and we found the cutest little house,and you've got your own bathroom.

VOA: standard.other

But I choose to walk, and just walking in the seasons whether it's snowing or raining, or gorgeous sunny fall day.

但是我选择走路，什么季节都是如此,无论是雪天，雨天，亦或是秋高气爽。

普林斯顿公开课 - 人性课程节选

Especially on a day like this, a nice, hot, sunny day like this, the park's a lot busier.

特别是在一个这样的日子，美好的、温暖的、阳光的一天，公园会更热闹。

海德公园的氛围 - SpeakingMax英语口语达人

For those who came in on sunny days, the added distraction of the sunny-day photographs had little effect on performance.

FORBES: Why Bad Weather Is Good for Productivity (Blizzards Notwithstanding)

On a clear and sunny day, on the first day of school, death had come.

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Friday offers a very warm, dry and sunny day after early mist quickly burns-away.

BBC: Glastonbury Festival 2010 weather forecast