Tympanostomy tube placement increased 28% per capita between 1996 and 2006, to 0.96 surgeries per 100 children.是什么意思_Tympanostomy tube placement increased 28% per capita between 1996 and 2006, to 0.96 surgeries per 100 children.在线翻译_英语_读音_用法_例句