has-been

He spoke of the abhorrent crimes that had been committed under the regime.

他说起那个政权曾犯下的种种可憎的暴行。

The timer must have been actuated by radio control.

这个定时器肯定是无线电操纵开动的。

Acupuncture has been used as medical means since antiquity in China.

针灸在中国自古以来就被用作医疗手段了。

She had been cut adrift from everything she had known.

她离了她所熟知的一切。

The annex has been built on to the main building.

主楼配建有附属的建筑物。

We have been worried about her apathy since her husband died.

她丈夫死后, 我们一直为她对一切都持冷漠态度而担忧。

The spectra and photophysics of 2-aryl-benzoxazole derivatives have been studied in this work.

对2-芳基苯并唑衍生物的光谱及光物理行为进行了研究。

Six series of aryloxy pyridazines derivatives have been synthesized starting from 3,6 dichloro pyradizine.

以3,6-二氯哒嗪为原料,合成了6类芳氧基哒嗪类衍生物,研究了它们的合成方法,并测定了所得产物的除草活性。

This area has been marked off for athletic practice.

这块地方被划出来供体育训练用。

The occupancy rate of beds has been averaging out about 80 percent.

病床占用率平均保持在80％左右。

He acknowledged that the purchase had been a mistake.

他承认购买那东西是个举。

His musical achievements have been decidedly slender.

他在音乐上的成就微不足道。

All winter I have been aching for sunshine.

整个冬季我都在盼望晴朗的天气。

Mr. Huang has been a good friend to me in adversity or in prosperity.

不管我处于逆境还是顺境, 黄先生一直是我的好友。

Mary has been ailing for a week.

玛丽已经病了一个星期。

The effect was entirely alien from what had been intended.

这个结果与原先的意图大相径庭。

Methods 2 7cases of intragenic biliary duct injury had been analysed retrospectively near nine years.

方法回顾性分析9年来27例医源性胆道损伤的情况。

So far there have been fourteen arrests all told.

至今总共有十四人被捕。

A different policeman has been assigned to the case.

另一名警察被派去处理该案。

The public has been awakened to the full horror of the situation.

公众完全意识到了这一状况的可怕程度。