| 买 | mǎi | to buy; to purchase | 
| 球 | qiú | ball; sphere; globe; CL:個|个[ge4]; ball game; match; CL:場|场[chang3] | 
| 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 |