assert

v. /əˈsɝːt/ B2

断言；主张；坚持

To state clearly and firmly that something is true.

仙境例句

The Pigeon asserted that she had tried roots of trees, banks and hedges, and none of them would do.

鸽子一口咬定，树根、河岸和树篱她都试过了，没有一处管用。