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双纽线 /shuāngniǔxiàn/ meaning in English

ChineseEnglish
双纽线 /shuāngniǔxiàn/ noun

lemniscate [lemniscates](symbol for infinity)
noun
[UK: lˈemnɪskˌeɪt] [US: lˈemnɪskˌeɪt]