https://mp.weixin.qq.com/s?src=11×tamp=1560662002&ver=1671&signature=TrH9P-N2kRvrCKdE5ARzhxNH3YEyDGSKDC*ZJTyvsugIlmRmrYYendQjnPjPSiiC2ig2JJQayrcN3P8jZ2zP-MndNkBf4zg6o*yhl6p9FbRNyUG-aYKzvJuBD1qASrdL&new=1
48个国际音标发音部位要领
https://wenku.baidu.com/view/091153efb8f3f90f76c66137ee06eff9aef8491d