David attributed his company's success to the unity of all the staff and their persevering hard work.

大卫说他们公司之所以获得成功是由员工的团结和坚持不懈努力工作的结果。

He is a persevering student.

他是个有恒心的学生。

Success belongs to the persevering.

胜利属不屈不挠的人。