But I think something about my unusual right hand technique has helped me avoid that muddiness.

但是我相信我的非常的右手技巧使我很好的避免了“浑”音的出现。

If coal gas excess, it shown dark red, muddiness, and the wall of combustion chamber could be seen hardly.

如果煤气量过多，则呈暗红，混浊不清，难见燃烧室砖墙。