基本解釋聲調下降同根派生 downstep相關詞英漢例句Downstep in pitch contour of Mandarin Chinese is examined using subtly designed sentences, by controlling tone combinations. 采用設計特定聲調組合的實驗室語句的方法,研究了漢語普通話語調降階的規(guī)律。downstep更多例句