词根：caten = chain （链）

concatenare v. 把—连在一起

词根词缀：laten-, late-

【来源及含义】Latin: to lurk; to lie hidden, to be hidden

【同源单词】latency, latent, latent hostility, latently, latescence, latescent

词根词缀：patent-

【来源及含义】Latin: to be open, lying open, to lie open

【同源单词】patent, patentability, patentable, patentee, patently, patentor