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first tauching-time是什么意思，first tauching-time的翻译，first tauching-time音标、读音、用法和例句_沉淀汉英词典
沉淀汉英词典

first tauching-time

F 开头单词

基本解释

  • [数学]首触时

专业释义

    数学

  • 首触时