VERB
断言；申明；坚持声称
If you affirm that something is true or that something exists, you state firmly and publicly that it is true or exists.
例句
The House of Lords affirmed that the terms of a contract cannot be rewritten retrospectively.
上议院申明合同条款改写后不具备追溯效力。
...a speech in which he affirmed a commitment to lower taxes...
他作出减税承诺的演讲