第一线 Save Sign in to save words Traditional (Taiwan): 第一線 On the HSK 7-9 vocabulary list, at CEFR level C2. dìyīxiàn ㄉㄧˋ ㄧ ㄒㄧㄢˋ front line forefront Character by character 第(dì)(prefix indicating ordinal number, as in 第六 dìliù "sixth") 一(yī)one 线(xiàn)thread A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT