| 深入 | shēn rù | to penetrate deeply; thorough |
| 探究 | tàn jiū | to investigate; to delve; to probe; to enquire into; to look into |
| 电报 | diàn bào | telegram; cable; telegraph; CL:封[feng1],份[fen4] |
| 加 | jiā | to add; plus; (used after an adverb such as 不, 大, 稍 etc, and before a disyllabic verb, to indicate that the action of the verb is applied to sth or sb previously mentioned); to apply (restrictions etc) to (sb); to give (support, consideration etc) to (sth) |
| Jiā | abbr. for Canada 加拿大[Jia1 na2 da4]; surname Jia | |