a walk in the park

US /ə wɔk ɪn ðə pɑrk/
UK /ə wɔk ɪn ðə pɑrk/
"a walk in the park" picture
1.

非常に簡単, 楽勝

something that is very easy to do

:
Learning to ride a bike was a walk in the park for him.
自転車に乗ることを学ぶのは彼にとって非常に簡単だった
Don't worry, this exam will be a walk in the park.
心配しないで、この試験は楽勝だよ