Respiratory processes in anoxygenic and 0xygenic phototrophs 不生氧和生氧光营养中的呼吸过程
2.
Articulation is also difficult while circular breathing and should not be attempted until the student is very comfortable slurring 循环呼吸过程中的清晰度也是很难保证的,练习者在对这个技巧轻车熟路前不应过度追求。