坚决反对

• put one's foot down
• set oneself against
• set one's face against
• be dead set against
• be strong against
• be strong for

例句

1. 内阁坚决反对增加税收（的意见）。
   The government are set against (the idea of) raising taxes.
2. 委员会坚决反对这一计划。
   The committee was dead set against this plan.
3. 她父亲坚决反对她嫁给汤姆。
   Her father was dead set against her marrying Tom.