stacked tube sub的意思|示意

堆叠式的管 stacked tube sub » 堆叠式的管 Not the good general meeting past,anything all needed the transition-period » 不好大会过去，任何事都需要过渡期 ..

管堆叠 stacked tube sub » 管堆叠 They also show people the proper way of doing different kinds of exercises » 它们还显示出人做不同类型的练习的正确方法 ..