never failing

• adj. 不绝的(永不辜负期望的)

never failing的用法和样例：

例句

1. I never fail to write to my parents every month.
   我每个月一定写信给我的父母亲。
2. He is eloquent and humorous as well. What he says never fails to please us.
   他口才好又幽默，他所说的一定能使我们高兴。
3. It's a sight that never fails to thrill me.
   那是一种永远让我激动不已的景象。
4. A good teacher never fails to try his best to answer his students.
   一个好老师总是尽力为学生解答。