It's—it's a very fine day!

这——这是一个好天气！

A fine day, your Majesty!

天气真好，陛下！

What a fine day!

今天是个好日子！

"It must be a very fine day," he said, "and you must be very careful not to tire yourself."

“一定是个好天，”他说，“你也必须非常小心，千万别累着自己。”

It happened to be a fine day.

那天恰巧是个晴天。