可判定问题的英文：
decidability problem

to decide By lot
抽签决定

They decided to scrutinise.
他们决定认真调查。

The tense used is decided by the subject.
所用的时态取决于主语。

They decide to destroy the windmill.
他们决心摧毁风车。

He decided not to enter for the race.
他决定不报名参加比赛。

It was a complex problem.
这是一个复杂的问题。

Is the problem that easy?
问题有那么简单吗?

This is a prime problem.
这是一个有关质数的问题。

These are the resolved problems.
这些是已经解决的问题。

The housing problem is bound up with the problem of gale controls.
住屋问题涉及租金控制问题。