坚决反对

His family were adamantly opposed to the marriage.

他家人决对这门亲事。

He was an anti-Portuguese freedom fighter, but he absolutely refused to dehumanize the Portuguese.

他曾葡自由战士，但他决对非人道地对待葡萄牙人。

Politically, she is a staunch opponent of reform.

在政治, 决对改。

It is necessary to oppose and reject all kinds of cacodoxy against Marxism for the purpose of keeping the status of Marxism.

持马克思主义指导地位，必须决对和抵制各种马克思主义错误思潮。