a cogent argument的用法和样例：
- Miss Tox looked as if she saw no way out of such a cogent argument as that, at all.
- How can one expect she should, when she is so very unlike a Dombey?'Miss Tox looked as if she saw no way out of such a cogent argument as that, at all.
- When he was able to secure a series of meetings, he was able to offer a cogent argument of how he could take his expertise to help them succeed in their business.
- a cogent argument; a telling presentation; a weighty argument.
- Cogent argument in favour of the proposal.