as easy as winking 易如反掌

“易如反掌”，汉语成语，意思是像翻一下手掌那样容易（as easy as to turn one's hand），比喻事情很简单，非常容易完成。与英文俚语“as easy as winking”意思相近，表示“extremely easy, simple, or intuitive; requiring very little skill or effort”。

例句：

别担心，经过几节课和一些练习，开车就易如反掌了！

Don't worry, after some lessons and a bit of practice, driving is easy as winking!

这谁都办得到，简直易如反掌。

Anyone can do it; it's as easy as winking.