blend in
US /blend ɪn/
UK /blend ɪn/

1.
溶け込む, なじむ
to look similar to the other people or things around you so that you are not easily noticed
:
•
He tried to blend in with the local crowd.
彼は地元の群衆に溶け込もうとした。
•
The chameleon can change its color to blend in with its surroundings.
カメレオンは周囲に溶け込むために色を変えることができる。