22% survived with good brain ability. only 10% of the victims treated with traditional CPR survived with good brain ability, the American Heart Association changed its guidelines for CPR chest presses in 2005.
三个句子读下来很有难度，特别像survived前后两个咬唇音，还是有点不习惯，要反复练习。
感觉比之前有点进步。小喜悦中。
累计练习半小时
