a great and arduous task的用法和样例：
- To build socialism with Chinese characteristics is a great and arduous cause. It calls for the worthy people from all sectors who are loyal to the motherland and socialism to take action and lead other people in pushing forward this cause.
- Writing an ebook is a time consuming and arduous task.
- It is a great honor for me to be charged with such an arduous task.
- He was a great and historical personage.