demonstrating例句
Candidates who answered "b" could be awarded half marks for
demonstrating some understanding of the process.
回答b的选手表明对这个过程有所了解，因此可以得到一半的分数。
He was forced to entrust an assistant with the important task of testing and
demonstrating aircraft to prospective customers.
他不得不将向潜在客户测试和展示飞行器的重任交托给一名助手。
I'm having a hell of a wild time
demonstrating this car.
为展示这种车子,把我搞得狼狈不堪.