Let's wash our hands, it's as easy as can be.

洗你的手，使它们干净整洁。让我们洗手，这很简单。

I'll wash my hands, it's as easy as can be.

我会洗手，这很容易。

It's as easy as can be.

这很容易。

You need to make it as easy as you can.

你需要让它尽可能简单。