極深研幾 Save Sign in to save words Simplified: 极深研几 jíshēnyánjǐ ㄐㄧˊ ㄕㄣ ㄧㄢˊ ㄐㄧˇ deep and detailed investigation (idiom) Character by character 極(jí)extremely 深(shēn)deep 研(yán)grind 幾(jǐ)how many A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0