a departure from normal scientific method违反常规科学方法

Taylor announced another departure from practice, in that England will train at Wembley.泰勒又宣布了一项有违惯例的决定：英格兰队将在温布利球场训练。

This decision marks a dramatic departure from four decades of Supreme Court rulings.这一裁决明显背离了最高法院四十余年的断案惯例。