conclude 的词根为clude，词缀为con

例句

1、

This has made many Americans conclude that business ethics is an oxymoron.

这使得很多美国人断定商业道德是个自相矛盾的说法。

2、

Larry had concluded that he had no choice but to accept Paul's words as the truth

拉里断定自己别无选择，只能当保罗的话是真的。

3、

He concluded that Oswald was somewhat abnormal

他断定奥斯瓦尔德有点不正常。