To give the devil his due, he is quite a conscientious worker.

平心而论，他工作还是认真的。

Give the devil his due.

给魔鬼他的应该得的东西。

But to give the devil his due, I must admit that he is a pretty talented person.

不过说句公道话，我得承认他是个很有才华的人。

Give the devil his due; our boss pays well even if he does work us extremely hard.

即使我们的老板的确使我们工作得非常艰苦，但平心而论，他讨给我们的薪水却很丰厚。

He is very unreliable; but to give the devil his due, he is a first-class mechanic.

他很不可靠；但平心而论，他是一流的机械师。

I don't like Mr Jones, but to give the devil his due, I must admit that he is a good boss.

我不喜欢琼斯先生，但平心而论，我得承认他是个好老板。

I don't like my English teacher, but to give the devil his due, I must admit that he is good teacher.

我不喜欢我的英语老师，但平心而论，我必须承认他是个好老师。

I don't like him either. But to give the devil his due, I must admit that he is a pretty talented person.

出来混总是要还的表达的是前辈对同辈或者小辈的嘱咐，不要一味索取，记得以后的日子是要还的。