我想约她出去，但说起来容易做起来难。

I want to ask her out, but it's ___easier ___said ___than ___done.

我知道说起来容易做起来难，但你必须尝试。

I know it's ___easier ___said ___than ___done but you have to try.

减少碳排放说起来容易做起来难。

Reducing carbon emissions is ___easier ___said ___than ___done.