| 深入 | shēn rù | to penetrate deeply; thorough |
| 探究 | tàn jiū | to investigate; to delve; to probe; to enquire into; to look into |
| 充值 | chōng zhí | to recharge (money onto a card) |
| 优惠 | yōu huì | preferential; favorable |
| 企业 | qǐ yè | company; firm; enterprise; corporation; CL:家[jia1] |
| 签名 | qiān míng | to sign (one's name with a pen etc); to autograph; signature |
| 代理 | dài lǐ | to act on behalf of sb in a responsible position; to act as an agent or proxy; surrogate |