sialia

例句：

1. 1.The teacher explained the phonetic system to us.
   老师向我们解释了音标系统。
2. 2.The syllable count is important for pronunciation.
   音节数量对于发音很重要。
3. 3.Morse code was used for communication during World War I.
   莫尔斯电码在第一次世界大战期间被用于通信。