注册 | zhù cè | to register; to enroll |
口 | kǒu | mouth; classifier for things with mouths (people, domestic animals, cannons, wells etc); classifier for bites or mouthfuls |
平台 | píng tái | platform; terrace; flat-roofed building |
介绍 | jiè shào | to introduce (sb to sb); to give a presentation; to present (sb for a job etc); introduction |