Therefore it is safe to reverse position and pyramid when an option goes thru a tripletop or crosses the same price level the fourth time.
当行情第4次通过3重顶或者到达同级水平时，趋势倒置而呈金字塔，因此显得更加安全。
2
Teams in English football's top flight notched up around $2.5 billion in revenue last season, almost triple the level of a decade ago, making it the world's richest football league by a country mile.