请教:这些都指的是单板里的什么运动?

瓢虫啊

看到一篇文献,讲单板的,下面的这些不明白具体怎么翻译,请教各位.谢谢 ……snowboarding on a mental tube called a rail or over a box-type obstacle called a box are conducted, as well as a half pipe or jump in snowboarding.
另外，stance width指单板里的什么呢？

龙野

sunrise

fatalerror

　snowboarding on a mental tube called a rail or over a box-type obstacle called a box are conducted
都被称作obstacle　tricks,怎么翻俺不知道
halfpipe就是半管,这些南山都有

snowdiver

在钢管、在一个盒子型的障碍物上，和在U槽或是跳跃一样，都是玩单板一种玩法。