Last Tuesday, a little more than four years later, the company unnerved Wall Street, announcing for the third time this year that it would not meet its financial targets.

• 上周二，仅仅过去了四年多一点时间，朗讯便在今年第三次宣布，它不能实现其财务目标，搅得整个华尔街惶惶不安。