outstanding前面加an.

This is an outstanding example of strict economy .这是厉行节约的一个出色范例。

The observation is an outstanding aesthetic attraction .观测具有特别的美学吸引力。

He had arrived in moscow with an outstanding reference .他带着极高评语来到莫斯科。

My warmest congratulations to you for such an outstanding performance .我为你取得如此突出的成绩向你表示热烈的祝贺。

And yet you could never envisage chaddy as headmistress of an outstanding school .可是你难以想象查迪能当一所著名学校的校长。