切题的英文：
to the question
To the point
切中要害,切题
To the purpose; to the point
合乎目的;切题;中肯
n. 问题；疑问；难题；询问；审问；疑问句
v. 询问；怀疑；探究
This is a relevant question.
这是一个中肯的问题。
It was a gift of a question.
解答那一道题不费吹灰之力。
This is a multiple question.
这是个复杂的问题。
That is not the point in question.
那不是要考虑的要点。
That is beside the question.
那和这个问题不相干。