Although Cheng can delegate authority well, he is also an extremely diligent worker, keeping up with the younger men--though he is the oldest man ever to have been given the position.
儘管鄭部長善於授權，今年七十四歲的他仍然是個勤奮的工作者。據瞭解，這位歷來年齡最大的國防部長幹勁並不下於年輕人。