开声练习即打开喉咙歌唱的练习, 通俗化说即练声。相关的研究资料表明，人在正常情况下，平均每3~4秒钟呼吸一次，而演唱时，常常需要十几秒的时间唱完一句词才能换气，有时候可能...

When it comes to the Chinatown, we may talk about the Chinese cuisine and its rich culture atmosphere. Why does the Chinese cooking culture play an important role in the Chinatown culture? Why can the Chinatown culture exist in foreign natio...