声音就是声音高低升降的变化,汉语拼音理由四个音调它们分别是阴平、阳平、上声、去声.who can translat
问题描述：
声音就是声音高低升降的变化,汉语拼音理由四个音调它们分别是阴平、阳平、上声、去声.who can translat
答
The sound is lifting chausovsky changes, Chinese pinyin reason four tones they were yinping YangPing, rising, qu,