恪尽职守的英文：
due diligence

due是什么意思：
adj. 应支付的；应有的；正当的；合适的；到期的；预定的；由…引起的
n. 应得之物；应得权益；应付款；税金

He appeared in due course.
他在适当的时候出现了。

Honour to whom honour is due
荣誉归于应得荣誉的人

He handled it with due care.
他以应有的小心处理这事。

The bank loan is due this month.
银行贷款本月到期。

The whole matter is due for an airing.
全案将会公开讨论。

diligence是什么意思：
n. 勤奋；勤勉

This student is a model of diligence.
这学生是勤勉的模范。

Genius is nothing But labor and diligence.
天才不过是勤奋而已。

Knowledge comes from diligence
知识源于勤奋

Genius is nothing But labour and diligence
天才就是劳动加勤奋

He is the epitome of diligence.
他是勤勉的典型。