A：It's said that the goverment will clamp down on the new policy.
据说政府呀取缔那项新政策了。
B：Are you sure of that?
你干肯定吗?
A：I am not certain about that.
我也不确信这个消息。
B：They may have some difficulty in doing it.
政府那么做可能很困难。
注释:
1.clamp down on：严格限制，取缔
2.be certain about：对......有把握，对......确信无疑
3.be sure of：对......肯定
4.have some difficulty in doing something：做某事有一定的难度