His remark did not pertain to the question.
他的话同这个问题不相干。
Learning the specific set of vocabulary words that pertain to one's business becomes a simple task.
学习和自己行业有关的这组特殊字汇成为一件简单的工作。
It does not pertain to the young to instruct their elders.
年轻人不应该对老年人发号施令。