媒介 (méi jiè): intermediary; vehicle; vector; medium; media

Mobile phones have become an important medium for people to obtain information; whether reading news or looking up materials, we can't do without them.

In cross-cultural communication, language often serves as a medium, helping people from different countries understand each other.

Through the medium of social media, this journalist spread stories from remote areas to the whole world.

There is no direct contact between him and me; we need Teacher Wang as an intermediary to pass on messages.

The Internet, as a medium, enables children in remote mountainous areas to listen to lessons by famous urban teachers.