to teach an old dog new tricks (to teach an old dog new tricks)

Idiom Education

意味

to try to teach someone something they are set in their ways about

すでに自分のやり方に固執している人に何かを教えようとすること (sude ni jibun no yarikata ni koshū shite iru hito ni nanika o oshieyou to suru koto)

例文

"It’s hard to teach an old dog new tricks when it comes to new technology."

"新しい技術に関しては、古い犬に新しい技を教えるのは難しい。" (atarashī gijutsu ni kanshite wa, **furui inu ni atarashī waza o oshieru** no wa muzukashī.)