1·It happened to be a fine day.
那天恰巧是个晴天。
—— 《新英汉大辞典》
2·It is a sheer joke to search for sunshine outdoors in an afternoon of a fine day, however, this is what I encounter today. Interesting enough.
在一个晴天下午的户外寻找阳光简直是个笑话，而这却是我昨天碰到的饶有趣味的一幕。
3·Plant have a meal the water level right away drops, while mending water, offer this meal meal that plants wants of fine day.
植物吃饭水位就下降，补水的同时，给予晴天植物要的这一餐饭。
4·A Spendthrift, who had wasted his fortune, and had nothing left but the clothes in which he stood, saw a Swallow one fine day in early spring.
有一个败家子，已挥霍完他所有的财产，就剩下身上穿的衣服了。早春的一个晴天，他看到了一只燕子。
5·Looks like a fine day today.
今天看上去是个晴天。