介かいして

expression

through; via; by means of

Used in the pattern ...を介して to indicate that something is done through a medium, intermediary, or channel. Common in formal and written contexts.

• インターネットを介かいして世せ界かい中じゅうの人ひととつながる。

  Connect with people around the world through the internet.

• 彼かれは友ゆう人