[duàn dìng]
conclude; form a judgment; decide; assertion; ascertainment; predicate; determine
He came to the conclusion that the machine was out of order.
他断定机器出了毛病。
We may reasonably conclude that the meeting has been postponed.
我们有理由可以断定， 会议推迟了。
We are sure you dare not.
我们断定你们是不敢的。