It's the best thing since sliced bread.

这是有史以来最棒的东西。

Our software is the best things since sliced bread.

我们的软件是有史以来最棒的产品。

You could say, " She thinks she's the best thing since sliced bread" .

你可以说，“自视甚高。”

So, when something is very good we can say it is the best thing since sliced bread.

所以，当某样东西非常好时，我们可以说it is the best thing since sliced bread（这是有史以来最好的事情）。

You don't agree. You could say, " She thinks she's the best thing since sliced bread."

你不这样认为。你可以说，“她认为她是有史以来最优秀的人。”

For example, the new map and direction app on my smartphone is the best thing since sliced bread!

例如，我智能手机上的新地图和方向软件是有史以来最好的东西！

The story editor, Kelly Jean Kelly, liked it. She said it was the best thing since sliced bread!

故事编辑凯利·吉恩·凯利很喜欢。她说这是有切片面包以来最好的事！

It's the best thing since sliced bread! I'm going to use the extra vacation time to visit friends in Paris.

这是有史以来最好的政策！我打算利用额外的假期去巴黎拜访朋友。

It's the best thing since sliced bread. It IS sliced bread.

切片面包是最好的东西 切了片的面包。