cogent造句
        Nancy's speech was very 
cogent.
南施的演说很有说服力.
There were perfectly 
cogent reasons why Julian Cavendish should be told of the Major's impending return.
要将少校即将返回的消息告知朱利安·卡文迪什是有绝对充足的理由的。
The result is a 
cogent explanation of inflation.
结果令人信服地解释了通货膨胀问题.
a 
cogent argument
有说服力的论点