pre-embryonic英p'riːembrɪ'ɒnɪk美p'riːembrɪ'ɒnɪkCOCA³¹⁵¹¹¹⁺⁴ 基本例句 胚前期的¹⁰⁰ The evolution of semantic orientation analysis can be divided into three stages, namely pre-embryonic stage, embryonic stage and exploring stage. 语义指向分析的发展历程可以划分为三个阶段：朦胧阶段、萌芽阶段和探索阶段。 cnki