deviate from

• 从…偏离；违背(原则)；不按…办；脱离(常规等)

  We never deviate from our principles.

  我们从不违背自己的原则。

  They deviated from their purpose.

  他们背离了自己的目的。

  The plane had to deviate from its normal flight path.

  那架飞机只好偏离正常的航线。